Home / 28,591.10-39,455.19-15,843.79

Finding the Fourth Proportional to 28,591.10, 39,455.19 and 15,843.79

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Solution

The fourth proportional to 28,591.10, 39,455.19 and 15,843.79 is: 21,864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,591.10 : 39,455.19 = 15,843.79 : x
  2. Step 2: Convert to fraction form
    28,591.10/39,455.19 = 15,843.79/x
  3. Step 3: Cross multiply
    28,591.10x = 39,455.19 × 15,843.79
  4. Step 4: Simplify right side
    28,591.10x = 625,119,716.32
  5. Step 5: Solve for x
    x = 625,119,716.32/28,591.10
  6. Step 6: Final answer
    x = 21,864.14

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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.