Home / 31,431.20-43,371.41-18,001.65

Finding the Fourth Proportional to 31,431.20, 43,371.41 and 18,001.65

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Solution

The fourth proportional to 31,431.20, 43,371.41 and 18,001.65 is: 24,840.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.20 : 43,371.41 = 18,001.65 : x
  2. Step 2: Convert to fraction form
    31,431.20/43,371.41 = 18,001.65/x
  3. Step 3: Cross multiply
    31,431.20x = 43,371.41 × 18,001.65
  4. Step 4: Simplify right side
    31,431.20x = 780,756,852.82
  5. Step 5: Solve for x
    x = 780,756,852.82/31,431.20
  6. Step 6: Final answer
    x = 24,840.19

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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.