Home / 28,801.12-39,742.68-21,251.56

Finding the Fourth Proportional to 28,801.12, 39,742.68 and 21,251.56

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Solution

The fourth proportional to 28,801.12, 39,742.68 and 21,251.56 is: 29,325.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,801.12 : 39,742.68 = 21,251.56 : x
  2. Step 2: Convert to fraction form
    28,801.12/39,742.68 = 21,251.56/x
  3. Step 3: Cross multiply
    28,801.12x = 39,742.68 × 21,251.56
  4. Step 4: Simplify right side
    28,801.12x = 844,593,948.58
  5. Step 5: Solve for x
    x = 844,593,948.58/28,801.12
  6. Step 6: Final answer
    x = 29,325.04

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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.