Home / 18,635.28-27,953.10-5,487.90

Finding the Fourth Proportional to 18,635.28, 27,953.10 and 5,487.90

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Solution

The fourth proportional to 18,635.28, 27,953.10 and 5,487.90 is: 8,231.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.28 : 27,953.10 = 5,487.90 : x
  2. Step 2: Convert to fraction form
    18,635.28/27,953.10 = 5,487.90/x
  3. Step 3: Cross multiply
    18,635.28x = 27,953.10 × 5,487.90
  4. Step 4: Simplify right side
    18,635.28x = 153,403,817.49
  5. Step 5: Solve for x
    x = 153,403,817.49/18,635.28
  6. Step 6: Final answer
    x = 8,231.90

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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.