Home / 15,191.15-20,957.54-9,221.85

Finding the Fourth Proportional to 15,191.15, 20,957.54 and 9,221.85

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Solution

The fourth proportional to 15,191.15, 20,957.54 and 9,221.85 is: 12,722.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191.15 : 20,957.54 = 9,221.85 : x
  2. Step 2: Convert to fraction form
    15,191.15/20,957.54 = 9,221.85/x
  3. Step 3: Cross multiply
    15,191.15x = 20,957.54 × 9,221.85
  4. Step 4: Simplify right side
    15,191.15x = 193,267,244.14
  5. Step 5: Solve for x
    x = 193,267,244.14/15,191.15
  6. Step 6: Final answer
    x = 12,722.36

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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.