Home / 13,943,939.90-20,915,909.85-8,487,812.30

Finding the Fourth Proportional to 13,943,939.90, 20,915,909.85 and 8,487,812.30

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Solution

The fourth proportional to 13,943,939.90, 20,915,909.85 and 8,487,812.30 is: 12,731,718.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943,939.90 : 20,915,909.85 = 8,487,812.30 : x
  2. Step 2: Convert to fraction form
    13,943,939.90/20,915,909.85 = 8,487,812.30/x
  3. Step 3: Cross multiply
    13,943,939.90x = 20,915,909.85 × 8,487,812.30
  4. Step 4: Simplify right side
    13,943,939.90x = 177,530,316,890,521.19
  5. Step 5: Solve for x
    x = 177,530,316,890,521.19/13,943,939.90
  6. Step 6: Final answer
    x = 12,731,718.45

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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.