Home / 38,131.71-57,197.72-21,275.12

Finding the Fourth Proportional to 38,131.71, 57,197.72 and 21,275.12

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Solution

The fourth proportional to 38,131.71, 57,197.72 and 21,275.12 is: 31,912.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,131.71 : 57,197.72 = 21,275.12 : x
  2. Step 2: Convert to fraction form
    38,131.71/57,197.72 = 21,275.12/x
  3. Step 3: Cross multiply
    38,131.71x = 57,197.72 × 21,275.12
  4. Step 4: Simplify right side
    38,131.71x = 1,216,888,123.93
  5. Step 5: Solve for x
    x = 1,216,888,123.93/38,131.71
  6. Step 6: Final answer
    x = 31,912.76

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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.