Home / 20,712,397.55-31,022,629.83-13,402,352.88

Finding the Fourth Proportional to 20,712,397.55, 31,022,629.83 and 13,402,352.88

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Solution

The fourth proportional to 20,712,397.55, 31,022,629.83 and 13,402,352.88 is: 20,073,785.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,397.55 : 31,022,629.83 = 13,402,352.88 : x
  2. Step 2: Convert to fraction form
    20,712,397.55/31,022,629.83 = 13,402,352.88/x
  3. Step 3: Cross multiply
    20,712,397.55x = 31,022,629.83 × 13,402,352.88
  4. Step 4: Simplify right side
    20,712,397.55x = 415,776,232,247,274.44
  5. Step 5: Solve for x
    x = 415,776,232,247,274.44/20,712,397.55
  6. Step 6: Final answer
    x = 20,073,785.83

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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.