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Finding the Fourth Proportional to 27,425.91, 37,847.48 and 15,489.21

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Solution

The fourth proportional to 27,425.91, 37,847.48 and 15,489.21 is: 21,374.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,425.91 : 37,847.48 = 15,489.21 : x
  2. Step 2: Convert to fraction form
    27,425.91/37,847.48 = 15,489.21/x
  3. Step 3: Cross multiply
    27,425.91x = 37,847.48 × 15,489.21
  4. Step 4: Simplify right side
    27,425.91x = 586,227,488.24
  5. Step 5: Solve for x
    x = 586,227,488.24/27,425.91
  6. Step 6: Final answer
    x = 21,374.95

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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.