Home / 20,772.60-28,623.42-16,042.20

Finding the Fourth Proportional to 20,772.60, 28,623.42 and 16,042.20

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Solution

The fourth proportional to 20,772.60, 28,623.42 and 16,042.20 is: 22,105.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.60 : 28,623.42 = 16,042.20 : x
  2. Step 2: Convert to fraction form
    20,772.60/28,623.42 = 16,042.20/x
  3. Step 3: Cross multiply
    20,772.60x = 28,623.42 × 16,042.20
  4. Step 4: Simplify right side
    20,772.60x = 459,182,628.32
  5. Step 5: Solve for x
    x = 459,182,628.32/20,772.60
  6. Step 6: Final answer
    x = 22,105.21

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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.