Home / 20,385,688.74-28,132,255.04-11,218,331.49

Finding the Fourth Proportional to 20,385,688.74, 28,132,255.04 and 11,218,331.49

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Solution

The fourth proportional to 20,385,688.74, 28,132,255.04 and 11,218,331.49 is: 15,481,299.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385,688.74 : 28,132,255.04 = 11,218,331.49 : x
  2. Step 2: Convert to fraction form
    20,385,688.74/28,132,255.04 = 11,218,331.49/x
  3. Step 3: Cross multiply
    20,385,688.74x = 28,132,255.04 × 11,218,331.49
  4. Step 4: Simplify right side
    20,385,688.74x = 315,596,962,543,851.56
  5. Step 5: Solve for x
    x = 315,596,962,543,851.56/20,385,688.74
  6. Step 6: Final answer
    x = 15,481,299.97

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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.