Home / 20,334,168.60-30,491,630.10-11,817,115.80

Finding the Fourth Proportional to 20,334,168.60, 30,491,630.10 and 11,817,115.80

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Solution

The fourth proportional to 20,334,168.60, 30,491,630.10 and 11,817,115.80 is: 17,720,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334,168.60 : 30,491,630.10 = 11,817,115.80 : x
  2. Step 2: Convert to fraction form
    20,334,168.60/30,491,630.10 = 11,817,115.80/x
  3. Step 3: Cross multiply
    20,334,168.60x = 30,491,630.10 × 11,817,115.80
  4. Step 4: Simplify right side
    20,334,168.60x = 360,323,123,822,465.62
  5. Step 5: Solve for x
    x = 360,323,123,822,465.62/20,334,168.60
  6. Step 6: Final answer
    x = 17,720,081.45

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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.