Home / 31,751.57-43,805.19-18,317.91

Finding the Fourth Proportional to 31,751.57, 43,805.19 and 18,317.91

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Solution

The fourth proportional to 31,751.57, 43,805.19 and 18,317.91 is: 25,271.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,751.57 : 43,805.19 = 18,317.91 : x
  2. Step 2: Convert to fraction form
    31,751.57/43,805.19 = 18,317.91/x
  3. Step 3: Cross multiply
    31,751.57x = 43,805.19 × 18,317.91
  4. Step 4: Simplify right side
    31,751.57x = 802,419,527.95
  5. Step 5: Solve for x
    x = 802,419,527.95/31,751.57
  6. Step 6: Final answer
    x = 25,271.81

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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.