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Finding the Fourth Proportional to 11,898.28, 17,951.31 and 11,865.48

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Solution

The fourth proportional to 11,898.28, 17,951.31 and 11,865.48 is: 17,901.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,898.28 : 17,951.31 = 11,865.48 : x
  2. Step 2: Convert to fraction form
    11,898.28/17,951.31 = 11,865.48/x
  3. Step 3: Cross multiply
    11,898.28x = 17,951.31 × 11,865.48
  4. Step 4: Simplify right side
    11,898.28x = 213,000,909.78
  5. Step 5: Solve for x
    x = 213,000,909.78/11,898.28
  6. Step 6: Final answer
    x = 17,901.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.