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Finding the Fourth Proportional to 11,135.52, 15,369.18 and 7,358.88

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Solution

The fourth proportional to 11,135.52, 15,369.18 and 7,358.88 is: 10,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.52 : 15,369.18 = 7,358.88 : x
  2. Step 2: Convert to fraction form
    11,135.52/15,369.18 = 7,358.88/x
  3. Step 3: Cross multiply
    11,135.52x = 15,369.18 × 7,358.88
  4. Step 4: Simplify right side
    11,135.52x = 113,099,951.32
  5. Step 5: Solve for x
    x = 113,099,951.32/11,135.52
  6. Step 6: Final answer
    x = 10,156.68

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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.