Home / 11,207.39-15,468.05-8,549.78

Finding the Fourth Proportional to 11,207.39, 15,468.05 and 8,549.78

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Solution

The fourth proportional to 11,207.39, 15,468.05 and 8,549.78 is: 11,800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,207.39 : 15,468.05 = 8,549.78 : x
  2. Step 2: Convert to fraction form
    11,207.39/15,468.05 = 8,549.78/x
  3. Step 3: Cross multiply
    11,207.39x = 15,468.05 × 8,549.78
  4. Step 4: Simplify right side
    11,207.39x = 132,248,381.78
  5. Step 5: Solve for x
    x = 132,248,381.78/11,207.39
  6. Step 6: Final answer
    x = 11,800.11

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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.