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Finding the Fourth Proportional to 18,742, 25,864.32 and 10,358.32

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Solution

The fourth proportional to 18,742, 25,864.32 and 10,358.32 is: 14,294.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742 : 25,864.32 = 10,358.32 : x
  2. Step 2: Convert to fraction form
    18,742/25,864.32 = 10,358.32/x
  3. Step 3: Cross multiply
    18,742x = 25,864.32 × 10,358.32
  4. Step 4: Simplify right side
    18,742x = 267,910,903.14
  5. Step 5: Solve for x
    x = 267,910,903.14/18,742
  6. Step 6: Final answer
    x = 14,294.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.