Home / 9,918.24-13,687.10-5,380.91

Finding the Fourth Proportional to 9,918.24, 13,687.10 and 5,380.91

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Solution

The fourth proportional to 9,918.24, 13,687.10 and 5,380.91 is: 7,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.24 : 13,687.10 = 5,380.91 : x
  2. Step 2: Convert to fraction form
    9,918.24/13,687.10 = 5,380.91/x
  3. Step 3: Cross multiply
    9,918.24x = 13,687.10 × 5,380.91
  4. Step 4: Simplify right side
    9,918.24x = 73,649,060.57
  5. Step 5: Solve for x
    x = 73,649,060.57/9,918.24
  6. Step 6: Final answer
    x = 7,425.62

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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.