Home / 15,539,140.80-21,443,011.20-8,663,212.80

Finding the Fourth Proportional to 15,539,140.80, 21,443,011.20 and 8,663,212.80

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Solution

The fourth proportional to 15,539,140.80, 21,443,011.20 and 8,663,212.80 is: 11,954,674.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,539,140.80 : 21,443,011.20 = 8,663,212.80 : x
  2. Step 2: Convert to fraction form
    15,539,140.80/21,443,011.20 = 8,663,212.80/x
  3. Step 3: Cross multiply
    15,539,140.80x = 21,443,011.20 × 8,663,212.80
  4. Step 4: Simplify right side
    15,539,140.80x = 185,765,369,098,383.38
  5. Step 5: Solve for x
    x = 185,765,369,098,383.38/15,539,140.80
  6. Step 6: Final answer
    x = 11,954,674.42

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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.