Home / 18,718,200.90-28,030,062.15-12,293,669.70

Finding the Fourth Proportional to 18,718,200.90, 28,030,062.15 and 12,293,669.70

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Solution

The fourth proportional to 18,718,200.90, 28,030,062.15 and 12,293,669.70 is: 18,409,478.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718,200.90 : 28,030,062.15 = 12,293,669.70 : x
  2. Step 2: Convert to fraction form
    18,718,200.90/28,030,062.15 = 12,293,669.70/x
  3. Step 3: Cross multiply
    18,718,200.90x = 28,030,062.15 × 12,293,669.70
  4. Step 4: Simplify right side
    18,718,200.90x = 344,592,325,742,571.81
  5. Step 5: Solve for x
    x = 344,592,325,742,571.81/18,718,200.90
  6. Step 6: Final answer
    x = 18,409,478.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.