Home / 13,750.72-20,619.78-7,512.82

Finding the Fourth Proportional to 13,750.72, 20,619.78 and 7,512.82

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Solution

The fourth proportional to 13,750.72, 20,619.78 and 7,512.82 is: 11,265.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.72 : 20,619.78 = 7,512.82 : x
  2. Step 2: Convert to fraction form
    13,750.72/20,619.78 = 7,512.82/x
  3. Step 3: Cross multiply
    13,750.72x = 20,619.78 × 7,512.82
  4. Step 4: Simplify right side
    13,750.72x = 154,912,695.58
  5. Step 5: Solve for x
    x = 154,912,695.58/13,750.72
  6. Step 6: Final answer
    x = 11,265.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.