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Finding the Fourth Proportional to 18,901, 28,356.30 and 6,589.96

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Solution

The fourth proportional to 18,901, 28,356.30 and 6,589.96 is: 9,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901 : 28,356.30 = 6,589.96 : x
  2. Step 2: Convert to fraction form
    18,901/28,356.30 = 6,589.96/x
  3. Step 3: Cross multiply
    18,901x = 28,356.30 × 6,589.96
  4. Step 4: Simplify right side
    18,901x = 186,866,882.75
  5. Step 5: Solve for x
    x = 186,866,882.75/18,901
  6. Step 6: Final answer
    x = 9,886.61

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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.