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Finding the Fourth Proportional to 28,758.52, 43,156.22 and 13,959.37

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Solution

The fourth proportional to 28,758.52, 43,156.22 and 13,959.37 is: 20,948.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,758.52 : 43,156.22 = 13,959.37 : x
  2. Step 2: Convert to fraction form
    28,758.52/43,156.22 = 13,959.37/x
  3. Step 3: Cross multiply
    28,758.52x = 43,156.22 × 13,959.37
  4. Step 4: Simplify right side
    28,758.52x = 602,433,642.78
  5. Step 5: Solve for x
    x = 602,433,642.78/28,758.52
  6. Step 6: Final answer
    x = 20,948.01

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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.