Home / 32,881.91-45,366.33-20,121.78

Finding the Fourth Proportional to 32,881.91, 45,366.33 and 20,121.78

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Solution

The fourth proportional to 32,881.91, 45,366.33 and 20,121.78 is: 27,761.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,881.91 : 45,366.33 = 20,121.78 : x
  2. Step 2: Convert to fraction form
    32,881.91/45,366.33 = 20,121.78/x
  3. Step 3: Cross multiply
    32,881.91x = 45,366.33 × 20,121.78
  4. Step 4: Simplify right side
    32,881.91x = 912,850,984.23
  5. Step 5: Solve for x
    x = 912,850,984.23/32,881.91
  6. Step 6: Final answer
    x = 27,761.50

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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.