Home / 11,639.20-17,379.95-9,146.04

Finding the Fourth Proportional to 11,639.20, 17,379.95 and 9,146.04

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Solution

The fourth proportional to 11,639.20, 17,379.95 and 9,146.04 is: 13,657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.20 : 17,379.95 = 9,146.04 : x
  2. Step 2: Convert to fraction form
    11,639.20/17,379.95 = 9,146.04/x
  3. Step 3: Cross multiply
    11,639.20x = 17,379.95 × 9,146.04
  4. Step 4: Simplify right side
    11,639.20x = 158,957,717.90
  5. Step 5: Solve for x
    x = 158,957,717.90/11,639.20
  6. Step 6: Final answer
    x = 13,657.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.