Home / 28,147.62-38,843.58-15,400.59

Finding the Fourth Proportional to 28,147.62, 38,843.58 and 15,400.59

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Solution

The fourth proportional to 28,147.62, 38,843.58 and 15,400.59 is: 21,252.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.62 : 38,843.58 = 15,400.59 : x
  2. Step 2: Convert to fraction form
    28,147.62/38,843.58 = 15,400.59/x
  3. Step 3: Cross multiply
    28,147.62x = 38,843.58 × 15,400.59
  4. Step 4: Simplify right side
    28,147.62x = 598,214,049.71
  5. Step 5: Solve for x
    x = 598,214,049.71/28,147.62
  6. Step 6: Final answer
    x = 21,252.74

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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.