Home / 28,034.97-38,688.22-15,288.15

Finding the Fourth Proportional to 28,034.97, 38,688.22 and 15,288.15

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Solution

The fourth proportional to 28,034.97, 38,688.22 and 15,288.15 is: 21,097.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,034.97 : 38,688.22 = 15,288.15 : x
  2. Step 2: Convert to fraction form
    28,034.97/38,688.22 = 15,288.15/x
  3. Step 3: Cross multiply
    28,034.97x = 38,688.22 × 15,288.15
  4. Step 4: Simplify right side
    28,034.97x = 591,471,310.59
  5. Step 5: Solve for x
    x = 591,471,310.59/28,034.97
  6. Step 6: Final answer
    x = 21,097.63

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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.