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Finding the Fourth Proportional to 18,530.88, 27,787.20 and 6,210.24

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Solution

The fourth proportional to 18,530.88, 27,787.20 and 6,210.24 is: 9,312.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.88 : 27,787.20 = 6,210.24 : x
  2. Step 2: Convert to fraction form
    18,530.88/27,787.20 = 6,210.24/x
  3. Step 3: Cross multiply
    18,530.88x = 27,787.20 × 6,210.24
  4. Step 4: Simplify right side
    18,530.88x = 172,565,180.93
  5. Step 5: Solve for x
    x = 172,565,180.93/18,530.88
  6. Step 6: Final answer
    x = 9,312.30

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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.