Home / 20,480.28-30,722.62-5,689.24

Finding the Fourth Proportional to 20,480.28, 30,722.62 and 5,689.24

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Solution

The fourth proportional to 20,480.28, 30,722.62 and 5,689.24 is: 8,534.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.28 : 30,722.62 = 5,689.24 : x
  2. Step 2: Convert to fraction form
    20,480.28/30,722.62 = 5,689.24/x
  3. Step 3: Cross multiply
    20,480.28x = 30,722.62 × 5,689.24
  4. Step 4: Simplify right side
    20,480.28x = 174,788,358.61
  5. Step 5: Solve for x
    x = 174,788,358.61/20,480.28
  6. Step 6: Final answer
    x = 8,534.47

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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.