Home / 13,654.34-20,475.71-5,760.39

Finding the Fourth Proportional to 13,654.34, 20,475.71 and 5,760.39

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Solution

The fourth proportional to 13,654.34, 20,475.71 and 5,760.39 is: 8,638.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.34 : 20,475.71 = 5,760.39 : x
  2. Step 2: Convert to fraction form
    13,654.34/20,475.71 = 5,760.39/x
  3. Step 3: Cross multiply
    13,654.34x = 20,475.71 × 5,760.39
  4. Step 4: Simplify right side
    13,654.34x = 117,948,046.32
  5. Step 5: Solve for x
    x = 117,948,046.32/13,654.34
  6. Step 6: Final answer
    x = 8,638.14

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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.