Home / 18,853.56-28,279.80-7,757.10

Finding the Fourth Proportional to 18,853.56, 28,279.80 and 7,757.10

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Solution

The fourth proportional to 18,853.56, 28,279.80 and 7,757.10 is: 11,635.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.56 : 28,279.80 = 7,757.10 : x
  2. Step 2: Convert to fraction form
    18,853.56/28,279.80 = 7,757.10/x
  3. Step 3: Cross multiply
    18,853.56x = 28,279.80 × 7,757.10
  4. Step 4: Simplify right side
    18,853.56x = 219,369,236.58
  5. Step 5: Solve for x
    x = 219,369,236.58/18,853.56
  6. Step 6: Final answer
    x = 11,635.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.