Home / 31,555.31-43,545.69-18,126.22

Finding the Fourth Proportional to 31,555.31, 43,545.69 and 18,126.22

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Solution

The fourth proportional to 31,555.31, 43,545.69 and 18,126.22 is: 25,013.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,555.31 : 43,545.69 = 18,126.22 : x
  2. Step 2: Convert to fraction form
    31,555.31/43,545.69 = 18,126.22/x
  3. Step 3: Cross multiply
    31,555.31x = 43,545.69 × 18,126.22
  4. Step 4: Simplify right side
    31,555.31x = 789,318,756.99
  5. Step 5: Solve for x
    x = 789,318,756.99/31,555.31
  6. Step 6: Final answer
    x = 25,013.82

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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.