Home / 13,720.59-20,573.19-4,358.91

Finding the Fourth Proportional to 13,720.59, 20,573.19 and 4,358.91

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Solution

The fourth proportional to 13,720.59, 20,573.19 and 4,358.91 is: 6,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.59 : 20,573.19 = 4,358.91 : x
  2. Step 2: Convert to fraction form
    13,720.59/20,573.19 = 4,358.91/x
  3. Step 3: Cross multiply
    13,720.59x = 20,573.19 × 4,358.91
  4. Step 4: Simplify right side
    13,720.59x = 89,676,760.77
  5. Step 5: Solve for x
    x = 89,676,760.77/13,720.59
  6. Step 6: Final answer
    x = 6,535.93

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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.