Home / 10,948.60-16,422.90-5,105.80

Finding the Fourth Proportional to 10,948.60, 16,422.90 and 5,105.80

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Solution

The fourth proportional to 10,948.60, 16,422.90 and 5,105.80 is: 7,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,948.60 : 16,422.90 = 5,105.80 : x
  2. Step 2: Convert to fraction form
    10,948.60/16,422.90 = 5,105.80/x
  3. Step 3: Cross multiply
    10,948.60x = 16,422.90 × 5,105.80
  4. Step 4: Simplify right side
    10,948.60x = 83,852,042.82
  5. Step 5: Solve for x
    x = 83,852,042.82/10,948.60
  6. Step 6: Final answer
    x = 7,658.70

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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.