Home / 18,432.12-27,642.50-5,280.96

Finding the Fourth Proportional to 18,432.12, 27,642.50 and 5,280.96

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Solution

The fourth proportional to 18,432.12, 27,642.50 and 5,280.96 is: 7,919.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,432.12 : 27,642.50 = 5,280.96 : x
  2. Step 2: Convert to fraction form
    18,432.12/27,642.50 = 5,280.96/x
  3. Step 3: Cross multiply
    18,432.12x = 27,642.50 × 5,280.96
  4. Step 4: Simplify right side
    18,432.12x = 145,978,936.80
  5. Step 5: Solve for x
    x = 145,978,936.80/18,432.12
  6. Step 6: Final answer
    x = 7,919.81

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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.