Home / 33,138.59-45,732.86-18,991.47

Finding the Fourth Proportional to 33,138.59, 45,732.86 and 18,991.47

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Solution

The fourth proportional to 33,138.59, 45,732.86 and 18,991.47 is: 26,209.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,138.59 : 45,732.86 = 18,991.47 : x
  2. Step 2: Convert to fraction form
    33,138.59/45,732.86 = 18,991.47/x
  3. Step 3: Cross multiply
    33,138.59x = 45,732.86 × 18,991.47
  4. Step 4: Simplify right side
    33,138.59x = 868,534,286.18
  5. Step 5: Solve for x
    x = 868,534,286.18/33,138.59
  6. Step 6: Final answer
    x = 26,209.15

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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.