Home / 27,800.73-38,359.35-15,861.87

Finding the Fourth Proportional to 27,800.73, 38,359.35 and 15,861.87

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Solution

The fourth proportional to 27,800.73, 38,359.35 and 15,861.87 is: 21,886.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,800.73 : 38,359.35 = 15,861.87 : x
  2. Step 2: Convert to fraction form
    27,800.73/38,359.35 = 15,861.87/x
  3. Step 3: Cross multiply
    27,800.73x = 38,359.35 × 15,861.87
  4. Step 4: Simplify right side
    27,800.73x = 608,451,022.98
  5. Step 5: Solve for x
    x = 608,451,022.98/27,800.73
  6. Step 6: Final answer
    x = 21,886.15

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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.