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Finding the Fourth Proportional to 13,642,232.40, 20,479,937.40 and 10,249,822.80

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Solution

The fourth proportional to 13,642,232.40, 20,479,937.40 and 10,249,822.80 is: 15,387,197.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642,232.40 : 20,479,937.40 = 10,249,822.80 : x
  2. Step 2: Convert to fraction form
    13,642,232.40/20,479,937.40 = 10,249,822.80/x
  3. Step 3: Cross multiply
    13,642,232.40x = 20,479,937.40 × 10,249,822.80
  4. Step 4: Simplify right side
    13,642,232.40x = 209,915,729,305,092.72
  5. Step 5: Solve for x
    x = 209,915,729,305,092.72/13,642,232.40
  6. Step 6: Final answer
    x = 15,387,197.87

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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.