Home / 13,730.64-20,597.17-3,869.90

Finding the Fourth Proportional to 13,730.64, 20,597.17 and 3,869.90

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Solution

The fourth proportional to 13,730.64, 20,597.17 and 3,869.90 is: 5,805.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.64 : 20,597.17 = 3,869.90 : x
  2. Step 2: Convert to fraction form
    13,730.64/20,597.17 = 3,869.90/x
  3. Step 3: Cross multiply
    13,730.64x = 20,597.17 × 3,869.90
  4. Step 4: Simplify right side
    13,730.64x = 79,708,988.18
  5. Step 5: Solve for x
    x = 79,708,988.18/13,730.64
  6. Step 6: Final answer
    x = 5,805.19

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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.