Home / 13,279.77-19,926.33-8,280.85

Finding the Fourth Proportional to 13,279.77, 19,926.33 and 8,280.85

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Solution

The fourth proportional to 13,279.77, 19,926.33 and 8,280.85 is: 12,425.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.77 : 19,926.33 = 8,280.85 : x
  2. Step 2: Convert to fraction form
    13,279.77/19,926.33 = 8,280.85/x
  3. Step 3: Cross multiply
    13,279.77x = 19,926.33 × 8,280.85
  4. Step 4: Simplify right side
    13,279.77x = 165,006,997.80
  5. Step 5: Solve for x
    x = 165,006,997.80/13,279.77
  6. Step 6: Final answer
    x = 12,425.44

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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.