Home / 27,990.71-38,628.11-15,244.38

Finding the Fourth Proportional to 27,990.71, 38,628.11 and 15,244.38

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Solution

The fourth proportional to 27,990.71, 38,628.11 and 15,244.38 is: 21,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990.71 : 38,628.11 = 15,244.38 : x
  2. Step 2: Convert to fraction form
    27,990.71/38,628.11 = 15,244.38/x
  3. Step 3: Cross multiply
    27,990.71x = 38,628.11 × 15,244.38
  4. Step 4: Simplify right side
    27,990.71x = 588,861,511.30
  5. Step 5: Solve for x
    x = 588,861,511.30/27,990.71
  6. Step 6: Final answer
    x = 21,037.75

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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.