Home / 18,821.14-25,961.73-12,447.70

Finding the Fourth Proportional to 18,821.14, 25,961.73 and 12,447.70

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Solution

The fourth proportional to 18,821.14, 25,961.73 and 12,447.70 is: 17,170.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.14 : 25,961.73 = 12,447.70 : x
  2. Step 2: Convert to fraction form
    18,821.14/25,961.73 = 12,447.70/x
  3. Step 3: Cross multiply
    18,821.14x = 25,961.73 × 12,447.70
  4. Step 4: Simplify right side
    18,821.14x = 323,163,826.52
  5. Step 5: Solve for x
    x = 323,163,826.52/18,821.14
  6. Step 6: Final answer
    x = 17,170.26

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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.