Home / 20,479.80-28,244.46-15,996.60

Finding the Fourth Proportional to 20,479.80, 28,244.46 and 15,996.60

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Solution

The fourth proportional to 20,479.80, 28,244.46 and 15,996.60 is: 22,061.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.80 : 28,244.46 = 15,996.60 : x
  2. Step 2: Convert to fraction form
    20,479.80/28,244.46 = 15,996.60/x
  3. Step 3: Cross multiply
    20,479.80x = 28,244.46 × 15,996.60
  4. Step 4: Simplify right side
    20,479.80x = 451,815,328.84
  5. Step 5: Solve for x
    x = 451,815,328.84/20,479.80
  6. Step 6: Final answer
    x = 22,061.51

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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.