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Finding the Fourth Proportional to 18,216.78, 27,325.20 and 5,904.78

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Solution

The fourth proportional to 18,216.78, 27,325.20 and 5,904.78 is: 8,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.78 : 27,325.20 = 5,904.78 : x
  2. Step 2: Convert to fraction form
    18,216.78/27,325.20 = 5,904.78/x
  3. Step 3: Cross multiply
    18,216.78x = 27,325.20 × 5,904.78
  4. Step 4: Simplify right side
    18,216.78x = 161,349,294.46
  5. Step 5: Solve for x
    x = 161,349,294.46/18,216.78
  6. Step 6: Final answer
    x = 8,857.18

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1.5x scale

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.