Home / 20,754.38-28,641.05-12,370.88

Finding the Fourth Proportional to 20,754.38, 28,641.05 and 12,370.88

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Solution

The fourth proportional to 20,754.38, 28,641.05 and 12,370.88 is: 17,071.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.38 : 28,641.05 = 12,370.88 : x
  2. Step 2: Convert to fraction form
    20,754.38/28,641.05 = 12,370.88/x
  3. Step 3: Cross multiply
    20,754.38x = 28,641.05 × 12,370.88
  4. Step 4: Simplify right side
    20,754.38x = 354,314,787.56
  5. Step 5: Solve for x
    x = 354,314,787.56/20,754.38
  6. Step 6: Final answer
    x = 17,071.81

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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.