Home / 28,440.57-39,245.82-15,694.26

Finding the Fourth Proportional to 28,440.57, 39,245.82 and 15,694.26

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Solution

The fourth proportional to 28,440.57, 39,245.82 and 15,694.26 is: 21,656.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.57 : 39,245.82 = 15,694.26 : x
  2. Step 2: Convert to fraction form
    28,440.57/39,245.82 = 15,694.26/x
  3. Step 3: Cross multiply
    28,440.57x = 39,245.82 × 15,694.26
  4. Step 4: Simplify right side
    28,440.57x = 615,934,102.99
  5. Step 5: Solve for x
    x = 615,934,102.99/28,440.57
  6. Step 6: Final answer
    x = 21,656.88

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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.