Home / 20,680.92-28,541.34-12,725.88

Finding the Fourth Proportional to 20,680.92, 28,541.34 and 12,725.88

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Solution

The fourth proportional to 20,680.92, 28,541.34 and 12,725.88 is: 17,562.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.92 : 28,541.34 = 12,725.88 : x
  2. Step 2: Convert to fraction form
    20,680.92/28,541.34 = 12,725.88/x
  3. Step 3: Cross multiply
    20,680.92x = 28,541.34 × 12,725.88
  4. Step 4: Simplify right side
    20,680.92x = 363,213,667.88
  5. Step 5: Solve for x
    x = 363,213,667.88/20,680.92
  6. Step 6: Final answer
    x = 17,562.74

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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.