Home / 28,853.18-43,165.92-21,853.42

Finding the Fourth Proportional to 28,853.18, 43,165.92 and 21,853.42

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Solution

The fourth proportional to 28,853.18, 43,165.92 and 21,853.42 is: 32,693.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,853.18 : 43,165.92 = 21,853.42 : x
  2. Step 2: Convert to fraction form
    28,853.18/43,165.92 = 21,853.42/x
  3. Step 3: Cross multiply
    28,853.18x = 43,165.92 × 21,853.42
  4. Step 4: Simplify right side
    28,853.18x = 943,322,979.45
  5. Step 5: Solve for x
    x = 943,322,979.45/28,853.18
  6. Step 6: Final answer
    x = 32,693.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.