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Finding the Fourth Proportional to 18,436.88, 27,655.42 and 4,585.88

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Solution

The fourth proportional to 18,436.88, 27,655.42 and 4,585.88 is: 6,878.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.88 : 27,655.42 = 4,585.88 : x
  2. Step 2: Convert to fraction form
    18,436.88/27,655.42 = 4,585.88/x
  3. Step 3: Cross multiply
    18,436.88x = 27,655.42 × 4,585.88
  4. Step 4: Simplify right side
    18,436.88x = 126,824,437.47
  5. Step 5: Solve for x
    x = 126,824,437.47/18,436.88
  6. Step 6: Final answer
    x = 6,878.84

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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.