Home / 13,451.18-18,562.77-8,418.38

Finding the Fourth Proportional to 13,451.18, 18,562.77 and 8,418.38

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Solution

The fourth proportional to 13,451.18, 18,562.77 and 8,418.38 is: 11,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.18 : 18,562.77 = 8,418.38 : x
  2. Step 2: Convert to fraction form
    13,451.18/18,562.77 = 8,418.38/x
  3. Step 3: Cross multiply
    13,451.18x = 18,562.77 × 8,418.38
  4. Step 4: Simplify right side
    13,451.18x = 156,268,358.90
  5. Step 5: Solve for x
    x = 156,268,358.90/13,451.18
  6. Step 6: Final answer
    x = 11,617.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.