Home / 31,511.15-43,471.72-18,757.18

Finding the Fourth Proportional to 31,511.15, 43,471.72 and 18,757.18

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Solution

The fourth proportional to 31,511.15, 43,471.72 and 18,757.18 is: 25,876.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,511.15 : 43,471.72 = 18,757.18 : x
  2. Step 2: Convert to fraction form
    31,511.15/43,471.72 = 18,757.18/x
  3. Step 3: Cross multiply
    31,511.15x = 43,471.72 × 18,757.18
  4. Step 4: Simplify right side
    31,511.15x = 815,406,876.95
  5. Step 5: Solve for x
    x = 815,406,876.95/31,511.15
  6. Step 6: Final answer
    x = 25,876.77

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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.