Home / 28,057.44-38,719.29-15,310.65

Finding the Fourth Proportional to 28,057.44, 38,719.29 and 15,310.65

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Solution

The fourth proportional to 28,057.44, 38,719.29 and 15,310.65 is: 21,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057.44 : 38,719.29 = 15,310.65 : x
  2. Step 2: Convert to fraction form
    28,057.44/38,719.29 = 15,310.65/x
  3. Step 3: Cross multiply
    28,057.44x = 38,719.29 × 15,310.65
  4. Step 4: Simplify right side
    28,057.44x = 592,817,497.44
  5. Step 5: Solve for x
    x = 592,817,497.44/28,057.44
  6. Step 6: Final answer
    x = 21,128.71

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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.