Home / 15,030,492,778.04-20,742,128,501.11-8,347,489,342.78

Finding the Fourth Proportional to 15,030,492,778.04, 20,742,128,501.11 and 8,347,489,342.78

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Solution

The fourth proportional to 15,030,492,778.04, 20,742,128,501.11 and 8,347,489,342.78 is: 11,519,562,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030,492,778.04 : 20,742,128,501.11 = 8,347,489,342.78 : x
  2. Step 2: Convert to fraction form
    15,030,492,778.04/20,742,128,501.11 = 8,347,489,342.78/x
  3. Step 3: Cross multiply
    15,030,492,778.04x = 20,742,128,501.11 × 8,347,489,342.78
  4. Step 4: Simplify right side
    15,030,492,778.04x = 173,144,696,609,671,905,280
  5. Step 5: Solve for x
    x = 173,144,696,609,671,905,280/15,030,492,778.04
  6. Step 6: Final answer
    x = 11,519,562,210.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.