Home / 31,864.05-43,976.79-18,443.16

Finding the Fourth Proportional to 31,864.05, 43,976.79 and 18,443.16

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Solution

The fourth proportional to 31,864.05, 43,976.79 and 18,443.16 is: 25,454.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,864.05 : 43,976.79 = 18,443.16 : x
  2. Step 2: Convert to fraction form
    31,864.05/43,976.79 = 18,443.16/x
  3. Step 3: Cross multiply
    31,864.05x = 43,976.79 × 18,443.16
  4. Step 4: Simplify right side
    31,864.05x = 811,070,974.26
  5. Step 5: Solve for x
    x = 811,070,974.26/31,864.05
  6. Step 6: Final answer
    x = 25,454.11

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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.