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Finding the Fourth Proportional to 18,806.78, 25,952.57 and 11,248.64

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Solution

The fourth proportional to 18,806.78, 25,952.57 and 11,248.64 is: 15,522.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.78 : 25,952.57 = 11,248.64 : x
  2. Step 2: Convert to fraction form
    18,806.78/25,952.57 = 11,248.64/x
  3. Step 3: Cross multiply
    18,806.78x = 25,952.57 × 11,248.64
  4. Step 4: Simplify right side
    18,806.78x = 291,931,148.97
  5. Step 5: Solve for x
    x = 291,931,148.97/18,806.78
  6. Step 6: Final answer
    x = 15,522.66

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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.