Home / 28,729.52-43,115.88-13,158.08

Finding the Fourth Proportional to 28,729.52, 43,115.88 and 13,158.08

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Solution

The fourth proportional to 28,729.52, 43,115.88 and 13,158.08 is: 19,747.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.52 : 43,115.88 = 13,158.08 : x
  2. Step 2: Convert to fraction form
    28,729.52/43,115.88 = 13,158.08/x
  3. Step 3: Cross multiply
    28,729.52x = 43,115.88 × 13,158.08
  4. Step 4: Simplify right side
    28,729.52x = 567,322,198.31
  5. Step 5: Solve for x
    x = 567,322,198.31/28,729.52
  6. Step 6: Final answer
    x = 19,747.01

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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.