Home / 31,429.08-43,381.34-18,691.23

Finding the Fourth Proportional to 31,429.08, 43,381.34 and 18,691.23

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Solution

The fourth proportional to 31,429.08, 43,381.34 and 18,691.23 is: 25,799.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,429.08 : 43,381.34 = 18,691.23 : x
  2. Step 2: Convert to fraction form
    31,429.08/43,381.34 = 18,691.23/x
  3. Step 3: Cross multiply
    31,429.08x = 43,381.34 × 18,691.23
  4. Step 4: Simplify right side
    31,429.08x = 810,850,510.19
  5. Step 5: Solve for x
    x = 810,850,510.19/31,429.08
  6. Step 6: Final answer
    x = 25,799.37

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Double scale
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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.