Home / 31,687.08-43,726.68-18,258.72

Finding the Fourth Proportional to 31,687.08, 43,726.68 and 18,258.72

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Solution

The fourth proportional to 31,687.08, 43,726.68 and 18,258.72 is: 25,196.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.08 : 43,726.68 = 18,258.72 : x
  2. Step 2: Convert to fraction form
    31,687.08/43,726.68 = 18,258.72/x
  3. Step 3: Cross multiply
    31,687.08x = 43,726.68 × 18,258.72
  4. Step 4: Simplify right side
    31,687.08x = 798,393,206.65
  5. Step 5: Solve for x
    x = 798,393,206.65/31,687.08
  6. Step 6: Final answer
    x = 25,196.17

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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.