Home / 31,290.97-43,181.99-18,713.29

Finding the Fourth Proportional to 31,290.97, 43,181.99 and 18,713.29

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Solution

The fourth proportional to 31,290.97, 43,181.99 and 18,713.29 is: 25,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.97 : 43,181.99 = 18,713.29 : x
  2. Step 2: Convert to fraction form
    31,290.97/43,181.99 = 18,713.29/x
  3. Step 3: Cross multiply
    31,290.97x = 43,181.99 × 18,713.29
  4. Step 4: Simplify right side
    31,290.97x = 808,077,008.08
  5. Step 5: Solve for x
    x = 808,077,008.08/31,290.97
  6. Step 6: Final answer
    x = 25,824.61

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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.