Home / 31,405.31-43,338.81-17,257.85

Finding the Fourth Proportional to 31,405.31, 43,338.81 and 17,257.85

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Solution

The fourth proportional to 31,405.31, 43,338.81 and 17,257.85 is: 23,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.31 : 43,338.81 = 17,257.85 : x
  2. Step 2: Convert to fraction form
    31,405.31/43,338.81 = 17,257.85/x
  3. Step 3: Cross multiply
    31,405.31x = 43,338.81 × 17,257.85
  4. Step 4: Simplify right side
    31,405.31x = 747,934,465.46
  5. Step 5: Solve for x
    x = 747,934,465.46/31,405.31
  6. Step 6: Final answer
    x = 23,815.55

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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.