Home / 15,935.46-21,990.62-8,861.73

Finding the Fourth Proportional to 15,935.46, 21,990.62 and 8,861.73

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Solution

The fourth proportional to 15,935.46, 21,990.62 and 8,861.73 is: 12,229.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.46 : 21,990.62 = 8,861.73 : x
  2. Step 2: Convert to fraction form
    15,935.46/21,990.62 = 8,861.73/x
  3. Step 3: Cross multiply
    15,935.46x = 21,990.62 × 8,861.73
  4. Step 4: Simplify right side
    15,935.46x = 194,874,959.13
  5. Step 5: Solve for x
    x = 194,874,959.13/15,935.46
  6. Step 6: Final answer
    x = 12,229.01

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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.