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Finding the Fourth Proportional to 12,394.72, 17,103.90 and 7,358.68

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Solution

The fourth proportional to 12,394.72, 17,103.90 and 7,358.68 is: 10,154.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,394.72 : 17,103.90 = 7,358.68 : x
  2. Step 2: Convert to fraction form
    12,394.72/17,103.90 = 7,358.68/x
  3. Step 3: Cross multiply
    12,394.72x = 17,103.90 × 7,358.68
  4. Step 4: Simplify right side
    12,394.72x = 125,862,126.85
  5. Step 5: Solve for x
    x = 125,862,126.85/12,394.72
  6. Step 6: Final answer
    x = 10,154.50

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1.5x scale

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.