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Finding the Fourth Proportional to 11,158.65, 15,398.43 and 6,679.74

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Solution

The fourth proportional to 11,158.65, 15,398.43 and 6,679.74 is: 9,217.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.65 : 15,398.43 = 6,679.74 : x
  2. Step 2: Convert to fraction form
    11,158.65/15,398.43 = 6,679.74/x
  3. Step 3: Cross multiply
    11,158.65x = 15,398.43 × 6,679.74
  4. Step 4: Simplify right side
    11,158.65x = 102,857,508.81
  5. Step 5: Solve for x
    x = 102,857,508.81/11,158.65
  6. Step 6: Final answer
    x = 9,217.74

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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.