Home / 15,728.09-21,705.17-8,654.94

Finding the Fourth Proportional to 15,728.09, 21,705.17 and 8,654.94

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Solution

The fourth proportional to 15,728.09, 21,705.17 and 8,654.94 is: 11,944.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.09 : 21,705.17 = 8,654.94 : x
  2. Step 2: Convert to fraction form
    15,728.09/21,705.17 = 8,654.94/x
  3. Step 3: Cross multiply
    15,728.09x = 21,705.17 × 8,654.94
  4. Step 4: Simplify right side
    15,728.09x = 187,856,900.77
  5. Step 5: Solve for x
    x = 187,856,900.77/15,728.09
  6. Step 6: Final answer
    x = 11,944.04

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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.