Home / 14,279.78-19,706.38-8,543.15

Finding the Fourth Proportional to 14,279.78, 19,706.38 and 8,543.15

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Solution

The fourth proportional to 14,279.78, 19,706.38 and 8,543.15 is: 11,789.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.78 : 19,706.38 = 8,543.15 : x
  2. Step 2: Convert to fraction form
    14,279.78/19,706.38 = 8,543.15/x
  3. Step 3: Cross multiply
    14,279.78x = 19,706.38 × 8,543.15
  4. Step 4: Simplify right side
    14,279.78x = 168,354,560.30
  5. Step 5: Solve for x
    x = 168,354,560.30/14,279.78
  6. Step 6: Final answer
    x = 11,789.72

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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.