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Finding the Fourth Proportional to 18,787.13, 28,185.01 and 6,475.13

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Solution

The fourth proportional to 18,787.13, 28,185.01 and 6,475.13 is: 9,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.13 : 28,185.01 = 6,475.13 : x
  2. Step 2: Convert to fraction form
    18,787.13/28,185.01 = 6,475.13/x
  3. Step 3: Cross multiply
    18,787.13x = 28,185.01 × 6,475.13
  4. Step 4: Simplify right side
    18,787.13x = 182,501,446.69
  5. Step 5: Solve for x
    x = 182,501,446.69/18,787.13
  6. Step 6: Final answer
    x = 9,714.18

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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.