Home / 31,825.92-43,916.40-18,395.04

Finding the Fourth Proportional to 31,825.92, 43,916.40 and 18,395.04

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Solution

The fourth proportional to 31,825.92, 43,916.40 and 18,395.04 is: 25,383.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,825.92 : 43,916.40 = 18,395.04 : x
  2. Step 2: Convert to fraction form
    31,825.92/43,916.40 = 18,395.04/x
  3. Step 3: Cross multiply
    31,825.92x = 43,916.40 × 18,395.04
  4. Step 4: Simplify right side
    31,825.92x = 807,843,934.66
  5. Step 5: Solve for x
    x = 807,843,934.66/31,825.92
  6. Step 6: Final answer
    x = 25,383.21

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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.