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Finding the Fourth Proportional to 18,597.62, 27,872.71 and 8,715.13

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Solution

The fourth proportional to 18,597.62, 27,872.71 and 8,715.13 is: 13,061.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.62 : 27,872.71 = 8,715.13 : x
  2. Step 2: Convert to fraction form
    18,597.62/27,872.71 = 8,715.13/x
  3. Step 3: Cross multiply
    18,597.62x = 27,872.71 × 8,715.13
  4. Step 4: Simplify right side
    18,597.62x = 242,914,199.63
  5. Step 5: Solve for x
    x = 242,914,199.63/18,597.62
  6. Step 6: Final answer
    x = 13,061.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.