Home / 15,728.32-21,704.64-8,654.76

Finding the Fourth Proportional to 15,728.32, 21,704.64 and 8,654.76

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Solution

The fourth proportional to 15,728.32, 21,704.64 and 8,654.76 is: 11,943.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.32 : 21,704.64 = 8,654.76 : x
  2. Step 2: Convert to fraction form
    15,728.32/21,704.64 = 8,654.76/x
  3. Step 3: Cross multiply
    15,728.32x = 21,704.64 × 8,654.76
  4. Step 4: Simplify right side
    15,728.32x = 187,848,450.09
  5. Step 5: Solve for x
    x = 187,848,450.09/15,728.32
  6. Step 6: Final answer
    x = 11,943.33

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Double scale
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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.