Home / 13,520.72-18,660.36-7,932.24

Finding the Fourth Proportional to 13,520.72, 18,660.36 and 7,932.24

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Solution

The fourth proportional to 13,520.72, 18,660.36 and 7,932.24 is: 10,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.72 : 18,660.36 = 7,932.24 : x
  2. Step 2: Convert to fraction form
    13,520.72/18,660.36 = 7,932.24/x
  3. Step 3: Cross multiply
    13,520.72x = 18,660.36 × 7,932.24
  4. Step 4: Simplify right side
    13,520.72x = 148,018,454.01
  5. Step 5: Solve for x
    x = 148,018,454.01/13,520.72
  6. Step 6: Final answer
    x = 10,947.53

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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.