Home / 20,422.47-30,575.28-13,836.97

Finding the Fourth Proportional to 20,422.47, 30,575.28 and 13,836.97

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Solution

The fourth proportional to 20,422.47, 30,575.28 and 13,836.97 is: 20,715.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.47 : 30,575.28 = 13,836.97 : x
  2. Step 2: Convert to fraction form
    20,422.47/30,575.28 = 13,836.97/x
  3. Step 3: Cross multiply
    20,422.47x = 30,575.28 × 13,836.97
  4. Step 4: Simplify right side
    20,422.47x = 423,069,232.10
  5. Step 5: Solve for x
    x = 423,069,232.10/20,422.47
  6. Step 6: Final answer
    x = 20,715.87

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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.