Home / 31,685.11-43,711.81-18,248.38

Finding the Fourth Proportional to 31,685.11, 43,711.81 and 18,248.38

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Solution

The fourth proportional to 31,685.11, 43,711.81 and 18,248.38 is: 25,174.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.11 : 43,711.81 = 18,248.38 : x
  2. Step 2: Convert to fraction form
    31,685.11/43,711.81 = 18,248.38/x
  3. Step 3: Cross multiply
    31,685.11x = 43,711.81 × 18,248.38
  4. Step 4: Simplify right side
    31,685.11x = 797,669,719.37
  5. Step 5: Solve for x
    x = 797,669,719.37/31,685.11
  6. Step 6: Final answer
    x = 25,174.91

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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.