Home / 20,742,014.66-28,634,730.59-15,153,986.25

Finding the Fourth Proportional to 20,742,014.66, 28,634,730.59 and 15,153,986.25

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Solution

The fourth proportional to 20,742,014.66, 28,634,730.59 and 15,153,986.25 is: 20,920,355.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,014.66 : 28,634,730.59 = 15,153,986.25 : x
  2. Step 2: Convert to fraction form
    20,742,014.66/28,634,730.59 = 15,153,986.25/x
  3. Step 3: Cross multiply
    20,742,014.66x = 28,634,730.59 × 15,153,986.25
  4. Step 4: Simplify right side
    20,742,014.66x = 433,930,313,671,199.38
  5. Step 5: Solve for x
    x = 433,930,313,671,199.38/20,742,014.66
  6. Step 6: Final answer
    x = 20,920,355.18

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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.