Home / 11,425.80-17,114.40-7,489.20

Finding the Fourth Proportional to 11,425.80, 17,114.40 and 7,489.20

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Solution

The fourth proportional to 11,425.80, 17,114.40 and 7,489.20 is: 11,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.80 : 17,114.40 = 7,489.20 : x
  2. Step 2: Convert to fraction form
    11,425.80/17,114.40 = 7,489.20/x
  3. Step 3: Cross multiply
    11,425.80x = 17,114.40 × 7,489.20
  4. Step 4: Simplify right side
    11,425.80x = 128,173,164.48
  5. Step 5: Solve for x
    x = 128,173,164.48/11,425.80
  6. Step 6: Final answer
    x = 11,217.87

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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.