Home / 13,417.85-18,517.11-7,449.61

Finding the Fourth Proportional to 13,417.85, 18,517.11 and 7,449.61

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Solution

The fourth proportional to 13,417.85, 18,517.11 and 7,449.61 is: 10,280.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.85 : 18,517.11 = 7,449.61 : x
  2. Step 2: Convert to fraction form
    13,417.85/18,517.11 = 7,449.61/x
  3. Step 3: Cross multiply
    13,417.85x = 18,517.11 × 7,449.61
  4. Step 4: Simplify right side
    13,417.85x = 137,945,247.83
  5. Step 5: Solve for x
    x = 137,945,247.83/13,417.85
  6. Step 6: Final answer
    x = 10,280.73

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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.