Home / 31,717.95-43,775.43-18,286.57

Finding the Fourth Proportional to 31,717.95, 43,775.43 and 18,286.57

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Solution

The fourth proportional to 31,717.95, 43,775.43 and 18,286.57 is: 25,238.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,717.95 : 43,775.43 = 18,286.57 : x
  2. Step 2: Convert to fraction form
    31,717.95/43,775.43 = 18,286.57/x
  3. Step 3: Cross multiply
    31,717.95x = 43,775.43 × 18,286.57
  4. Step 4: Simplify right side
    31,717.95x = 800,502,451.12
  5. Step 5: Solve for x
    x = 800,502,451.12/31,717.95
  6. Step 6: Final answer
    x = 25,238.16

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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.