Home / 15,454.72-21,330.24-9,170.56

Finding the Fourth Proportional to 15,454.72, 21,330.24 and 9,170.56

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Solution

The fourth proportional to 15,454.72, 21,330.24 and 9,170.56 is: 12,656.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.72 : 21,330.24 = 9,170.56 : x
  2. Step 2: Convert to fraction form
    15,454.72/21,330.24 = 9,170.56/x
  3. Step 3: Cross multiply
    15,454.72x = 21,330.24 × 9,170.56
  4. Step 4: Simplify right side
    15,454.72x = 195,610,245.73
  5. Step 5: Solve for x
    x = 195,610,245.73/15,454.72
  6. Step 6: Final answer
    x = 12,656.99

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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.