Home / 27,691.18-38,212.50-15,753.40

Finding the Fourth Proportional to 27,691.18, 38,212.50 and 15,753.40

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Solution

The fourth proportional to 27,691.18, 38,212.50 and 15,753.40 is: 21,738.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,691.18 : 38,212.50 = 15,753.40 : x
  2. Step 2: Convert to fraction form
    27,691.18/38,212.50 = 15,753.40/x
  3. Step 3: Cross multiply
    27,691.18x = 38,212.50 × 15,753.40
  4. Step 4: Simplify right side
    27,691.18x = 601,976,797.50
  5. Step 5: Solve for x
    x = 601,976,797.50/27,691.18
  6. Step 6: Final answer
    x = 21,738.94

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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.