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Finding the Fourth Proportional to 15,775, 21,767.16 and 9,060.92

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Solution

The fourth proportional to 15,775, 21,767.16 and 9,060.92 is: 12,502.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775 : 21,767.16 = 9,060.92 : x
  2. Step 2: Convert to fraction form
    15,775/21,767.16 = 9,060.92/x
  3. Step 3: Cross multiply
    15,775x = 21,767.16 × 9,060.92
  4. Step 4: Simplify right side
    15,775x = 197,230,495.39
  5. Step 5: Solve for x
    x = 197,230,495.39/15,775
  6. Step 6: Final answer
    x = 12,502.73

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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.