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Finding the Fourth Proportional to 18,239.76, 27,360.51 and 6,553.20

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Solution

The fourth proportional to 18,239.76, 27,360.51 and 6,553.20 is: 9,830.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,239.76 : 27,360.51 = 6,553.20 : x
  2. Step 2: Convert to fraction form
    18,239.76/27,360.51 = 6,553.20/x
  3. Step 3: Cross multiply
    18,239.76x = 27,360.51 × 6,553.20
  4. Step 4: Simplify right side
    18,239.76x = 179,298,894.13
  5. Step 5: Solve for x
    x = 179,298,894.13/18,239.76
  6. Step 6: Final answer
    x = 9,830.11

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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.