Home / 20,270.15-30,272.15-17,276.70

Finding the Fourth Proportional to 20,270.15, 30,272.15 and 17,276.70

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Solution

The fourth proportional to 20,270.15, 30,272.15 and 17,276.70 is: 25,801.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.15 : 30,272.15 = 17,276.70 : x
  2. Step 2: Convert to fraction form
    20,270.15/30,272.15 = 17,276.70/x
  3. Step 3: Cross multiply
    20,270.15x = 30,272.15 × 17,276.70
  4. Step 4: Simplify right side
    20,270.15x = 523,002,767.52
  5. Step 5: Solve for x
    x = 523,002,767.52/20,270.15
  6. Step 6: Final answer
    x = 25,801.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.