Home / 27,890.28-38,486.20-15,951.70

Finding the Fourth Proportional to 27,890.28, 38,486.20 and 15,951.70

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Solution

The fourth proportional to 27,890.28, 38,486.20 and 15,951.70 is: 22,011.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.28 : 38,486.20 = 15,951.70 : x
  2. Step 2: Convert to fraction form
    27,890.28/38,486.20 = 15,951.70/x
  3. Step 3: Cross multiply
    27,890.28x = 38,486.20 × 15,951.70
  4. Step 4: Simplify right side
    27,890.28x = 613,920,316.54
  5. Step 5: Solve for x
    x = 613,920,316.54/27,890.28
  6. Step 6: Final answer
    x = 22,011.98

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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.