Home / 20,170.80-30,209.28-19,470.24

Finding the Fourth Proportional to 20,170.80, 30,209.28 and 19,470.24

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Solution

The fourth proportional to 20,170.80, 30,209.28 and 19,470.24 is: 29,160.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.80 : 30,209.28 = 19,470.24 : x
  2. Step 2: Convert to fraction form
    20,170.80/30,209.28 = 19,470.24/x
  3. Step 3: Cross multiply
    20,170.80x = 30,209.28 × 19,470.24
  4. Step 4: Simplify right side
    20,170.80x = 588,181,931.83
  5. Step 5: Solve for x
    x = 588,181,931.83/20,170.80
  6. Step 6: Final answer
    x = 29,160.07

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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.