Home / 15,510.60-21,414.89-11,919.13

Finding the Fourth Proportional to 15,510.60, 21,414.89 and 11,919.13

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Solution

The fourth proportional to 15,510.60, 21,414.89 and 11,919.13 is: 16,456.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.60 : 21,414.89 = 11,919.13 : x
  2. Step 2: Convert to fraction form
    15,510.60/21,414.89 = 11,919.13/x
  3. Step 3: Cross multiply
    15,510.60x = 21,414.89 × 11,919.13
  4. Step 4: Simplify right side
    15,510.60x = 255,246,857.85
  5. Step 5: Solve for x
    x = 255,246,857.85/15,510.60
  6. Step 6: Final answer
    x = 16,456.29

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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.