Home / 20,261.52-27,960.12-12,304.08

Finding the Fourth Proportional to 20,261.52, 27,960.12 and 12,304.08

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Solution

The fourth proportional to 20,261.52, 27,960.12 and 12,304.08 is: 16,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.52 : 27,960.12 = 12,304.08 : x
  2. Step 2: Convert to fraction form
    20,261.52/27,960.12 = 12,304.08/x
  3. Step 3: Cross multiply
    20,261.52x = 27,960.12 × 12,304.08
  4. Step 4: Simplify right side
    20,261.52x = 344,023,553.29
  5. Step 5: Solve for x
    x = 344,023,553.29/20,261.52
  6. Step 6: Final answer
    x = 16,979.16

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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.