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Finding the Fourth Proportional to 18,330.30, 27,490.19 and 5,184

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Solution

The fourth proportional to 18,330.30, 27,490.19 and 5,184 is: 7,774.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,330.30 : 27,490.19 = 5,184 : x
  2. Step 2: Convert to fraction form
    18,330.30/27,490.19 = 5,184/x
  3. Step 3: Cross multiply
    18,330.30x = 27,490.19 × 5,184
  4. Step 4: Simplify right side
    18,330.30x = 142,509,119.04
  5. Step 5: Solve for x
    x = 142,509,119.04/18,330.30
  6. Step 6: Final answer
    x = 7,774.51

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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.