Home / 20,497.44-28,286.40-11,545.20

Finding the Fourth Proportional to 20,497.44, 28,286.40 and 11,545.20

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Solution

The fourth proportional to 20,497.44, 28,286.40 and 11,545.20 is: 15,932.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.44 : 28,286.40 = 11,545.20 : x
  2. Step 2: Convert to fraction form
    20,497.44/28,286.40 = 11,545.20/x
  3. Step 3: Cross multiply
    20,497.44x = 28,286.40 × 11,545.20
  4. Step 4: Simplify right side
    20,497.44x = 326,572,145.28
  5. Step 5: Solve for x
    x = 326,572,145.28/20,497.44
  6. Step 6: Final answer
    x = 15,932.34

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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.