Home / 15,449.04-21,311.64-9,163.44

Finding the Fourth Proportional to 15,449.04, 21,311.64 and 9,163.44

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Solution

The fourth proportional to 15,449.04, 21,311.64 and 9,163.44 is: 12,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.04 : 21,311.64 = 9,163.44 : x
  2. Step 2: Convert to fraction form
    15,449.04/21,311.64 = 9,163.44/x
  3. Step 3: Cross multiply
    15,449.04x = 21,311.64 × 9,163.44
  4. Step 4: Simplify right side
    15,449.04x = 195,287,934.44
  5. Step 5: Solve for x
    x = 195,287,934.44/15,449.04
  6. Step 6: Final answer
    x = 12,640.78

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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.