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Finding the Fourth Proportional to 11,508.72, 15,882.84 and 6,540.72

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Solution

The fourth proportional to 11,508.72, 15,882.84 and 6,540.72 is: 9,026.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.72 : 15,882.84 = 6,540.72 : x
  2. Step 2: Convert to fraction form
    11,508.72/15,882.84 = 6,540.72/x
  3. Step 3: Cross multiply
    11,508.72x = 15,882.84 × 6,540.72
  4. Step 4: Simplify right side
    11,508.72x = 103,885,209.24
  5. Step 5: Solve for x
    x = 103,885,209.24/11,508.72
  6. Step 6: Final answer
    x = 9,026.65

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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.