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Finding the Fourth Proportional to 18,409.58, 25,404.53 and 11,251.47

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Solution

The fourth proportional to 18,409.58, 25,404.53 and 11,251.47 is: 15,526.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.58 : 25,404.53 = 11,251.47 : x
  2. Step 2: Convert to fraction form
    18,409.58/25,404.53 = 11,251.47/x
  3. Step 3: Cross multiply
    18,409.58x = 25,404.53 × 11,251.47
  4. Step 4: Simplify right side
    18,409.58x = 285,838,250.90
  5. Step 5: Solve for x
    x = 285,838,250.90/18,409.58
  6. Step 6: Final answer
    x = 15,526.61

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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.