Home / 31,290.57-43,182.05-17,143.45

Finding the Fourth Proportional to 31,290.57, 43,182.05 and 17,143.45

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Solution

The fourth proportional to 31,290.57, 43,182.05 and 17,143.45 is: 23,658.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.57 : 43,182.05 = 17,143.45 : x
  2. Step 2: Convert to fraction form
    31,290.57/43,182.05 = 17,143.45/x
  3. Step 3: Cross multiply
    31,290.57x = 43,182.05 × 17,143.45
  4. Step 4: Simplify right side
    31,290.57x = 740,289,121.40
  5. Step 5: Solve for x
    x = 740,289,121.40/31,290.57
  6. Step 6: Final answer
    x = 23,658.54

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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.