Home / 20,470.22-30,545.68-18,263.78

Finding the Fourth Proportional to 20,470.22, 30,545.68 and 18,263.78

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Solution

The fourth proportional to 20,470.22, 30,545.68 and 18,263.78 is: 27,253.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.22 : 30,545.68 = 18,263.78 : x
  2. Step 2: Convert to fraction form
    20,470.22/30,545.68 = 18,263.78/x
  3. Step 3: Cross multiply
    20,470.22x = 30,545.68 × 18,263.78
  4. Step 4: Simplify right side
    20,470.22x = 557,879,579.47
  5. Step 5: Solve for x
    x = 557,879,579.47/20,470.22
  6. Step 6: Final answer
    x = 27,253.23

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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.