Home / 12,391.22-18,589.65-5,372.40

Finding the Fourth Proportional to 12,391.22, 18,589.65 and 5,372.40

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Solution

The fourth proportional to 12,391.22, 18,589.65 and 5,372.40 is: 8,059.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.22 : 18,589.65 = 5,372.40 : x
  2. Step 2: Convert to fraction form
    12,391.22/18,589.65 = 5,372.40/x
  3. Step 3: Cross multiply
    12,391.22x = 18,589.65 × 5,372.40
  4. Step 4: Simplify right side
    12,391.22x = 99,871,035.66
  5. Step 5: Solve for x
    x = 99,871,035.66/12,391.22
  6. Step 6: Final answer
    x = 8,059.83

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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.