Home / 15,855.45-23,761.31-11,955.57

Finding the Fourth Proportional to 15,855.45, 23,761.31 and 11,955.57

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Solution

The fourth proportional to 15,855.45, 23,761.31 and 11,955.57 is: 17,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,855.45 : 23,761.31 = 11,955.57 : x
  2. Step 2: Convert to fraction form
    15,855.45/23,761.31 = 11,955.57/x
  3. Step 3: Cross multiply
    15,855.45x = 23,761.31 × 11,955.57
  4. Step 4: Simplify right side
    15,855.45x = 284,079,945.22
  5. Step 5: Solve for x
    x = 284,079,945.22/15,855.45
  6. Step 6: Final answer
    x = 17,916.86

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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.