Home / 22,080.26-30,439.53-15,781.70

Finding the Fourth Proportional to 22,080.26, 30,439.53 and 15,781.70

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Solution

The fourth proportional to 22,080.26, 30,439.53 and 15,781.70 is: 21,756.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,080.26 : 30,439.53 = 15,781.70 : x
  2. Step 2: Convert to fraction form
    22,080.26/30,439.53 = 15,781.70/x
  3. Step 3: Cross multiply
    22,080.26x = 30,439.53 × 15,781.70
  4. Step 4: Simplify right side
    22,080.26x = 480,387,530.60
  5. Step 5: Solve for x
    x = 480,387,530.60/22,080.26
  6. Step 6: Final answer
    x = 21,756.43

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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.