Home / 31,719.18-43,772.34-18,290.39

Finding the Fourth Proportional to 31,719.18, 43,772.34 and 18,290.39

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Solution

The fourth proportional to 31,719.18, 43,772.34 and 18,290.39 is: 25,240.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.18 : 43,772.34 = 18,290.39 : x
  2. Step 2: Convert to fraction form
    31,719.18/43,772.34 = 18,290.39/x
  3. Step 3: Cross multiply
    31,719.18x = 43,772.34 × 18,290.39
  4. Step 4: Simplify right side
    31,719.18x = 800,612,950.95
  5. Step 5: Solve for x
    x = 800,612,950.95/31,719.18
  6. Step 6: Final answer
    x = 25,240.66

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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.