Home / 28,440.62-39,248.88-15,694.64

Finding the Fourth Proportional to 28,440.62, 39,248.88 and 15,694.64

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Solution

The fourth proportional to 28,440.62, 39,248.88 and 15,694.64 is: 21,659.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.62 : 39,248.88 = 15,694.64 : x
  2. Step 2: Convert to fraction form
    28,440.62/39,248.88 = 15,694.64/x
  3. Step 3: Cross multiply
    28,440.62x = 39,248.88 × 15,694.64
  4. Step 4: Simplify right side
    28,440.62x = 615,997,042.00
  5. Step 5: Solve for x
    x = 615,997,042.00/28,440.62
  6. Step 6: Final answer
    x = 21,659.06

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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.