Home / 20,791,166.40-28,690,353.09-12,088,721.61

Finding the Fourth Proportional to 20,791,166.40, 28,690,353.09 and 12,088,721.61

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Solution

The fourth proportional to 20,791,166.40, 28,690,353.09 and 12,088,721.61 is: 16,681,588.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791,166.40 : 28,690,353.09 = 12,088,721.61 : x
  2. Step 2: Convert to fraction form
    20,791,166.40/28,690,353.09 = 12,088,721.61/x
  3. Step 3: Cross multiply
    20,791,166.40x = 28,690,353.09 × 12,088,721.61
  4. Step 4: Simplify right side
    20,791,166.40x = 346,829,691,397,613.25
  5. Step 5: Solve for x
    x = 346,829,691,397,613.25/20,791,166.40
  6. Step 6: Final answer
    x = 16,681,588.94

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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.