Home / 38,981.48-53,793.22-21,990.92

Finding the Fourth Proportional to 38,981.48, 53,793.22 and 21,990.92

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Solution

The fourth proportional to 38,981.48, 53,793.22 and 21,990.92 is: 30,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,981.48 : 53,793.22 = 21,990.92 : x
  2. Step 2: Convert to fraction form
    38,981.48/53,793.22 = 21,990.92/x
  3. Step 3: Cross multiply
    38,981.48x = 53,793.22 × 21,990.92
  4. Step 4: Simplify right side
    38,981.48x = 1,182,962,397.56
  5. Step 5: Solve for x
    x = 1,182,962,397.56/38,981.48
  6. Step 6: Final answer
    x = 30,346.78

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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.