Home / 31,842.72-43,943.15-19,913.04

Finding the Fourth Proportional to 31,842.72, 43,943.15 and 19,913.04

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Solution

The fourth proportional to 31,842.72, 43,943.15 and 19,913.04 is: 27,480.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,842.72 : 43,943.15 = 19,913.04 : x
  2. Step 2: Convert to fraction form
    31,842.72/43,943.15 = 19,913.04/x
  3. Step 3: Cross multiply
    31,842.72x = 43,943.15 × 19,913.04
  4. Step 4: Simplify right side
    31,842.72x = 875,041,703.68
  5. Step 5: Solve for x
    x = 875,041,703.68/31,842.72
  6. Step 6: Final answer
    x = 27,480.12

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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.