Home / 33,123.52-45,712.32-18,978.72

Finding the Fourth Proportional to 33,123.52, 45,712.32 and 18,978.72

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Solution

The fourth proportional to 33,123.52, 45,712.32 and 18,978.72 is: 26,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,123.52 : 45,712.32 = 18,978.72 : x
  2. Step 2: Convert to fraction form
    33,123.52/45,712.32 = 18,978.72/x
  3. Step 3: Cross multiply
    33,123.52x = 45,712.32 × 18,978.72
  4. Step 4: Simplify right side
    33,123.52x = 867,561,321.83
  5. Step 5: Solve for x
    x = 867,561,321.83/33,123.52
  6. Step 6: Final answer
    x = 26,191.70

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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.