Home / 33,129.35-45,717.68-18,981.28

Finding the Fourth Proportional to 33,129.35, 45,717.68 and 18,981.28

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Solution

The fourth proportional to 33,129.35, 45,717.68 and 18,981.28 is: 26,193.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,129.35 : 45,717.68 = 18,981.28 : x
  2. Step 2: Convert to fraction form
    33,129.35/45,717.68 = 18,981.28/x
  3. Step 3: Cross multiply
    33,129.35x = 45,717.68 × 18,981.28
  4. Step 4: Simplify right side
    33,129.35x = 867,780,189.63
  5. Step 5: Solve for x
    x = 867,780,189.63/33,129.35
  6. Step 6: Final answer
    x = 26,193.70

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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.