Home / 31,387.87-43,315.26-17,240.71

Finding the Fourth Proportional to 31,387.87, 43,315.26 and 17,240.71

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Solution

The fourth proportional to 31,387.87, 43,315.26 and 17,240.71 is: 23,792.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.87 : 43,315.26 = 17,240.71 : x
  2. Step 2: Convert to fraction form
    31,387.87/43,315.26 = 17,240.71/x
  3. Step 3: Cross multiply
    31,387.87x = 43,315.26 × 17,240.71
  4. Step 4: Simplify right side
    31,387.87x = 746,785,836.23
  5. Step 5: Solve for x
    x = 746,785,836.23/31,387.87
  6. Step 6: Final answer
    x = 23,792.18

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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.