Home / 22,789.47-31,449.57-12,717.75

Finding the Fourth Proportional to 22,789.47, 31,449.57 and 12,717.75

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Solution

The fourth proportional to 22,789.47, 31,449.57 and 12,717.75 is: 17,550.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,789.47 : 31,449.57 = 12,717.75 : x
  2. Step 2: Convert to fraction form
    22,789.47/31,449.57 = 12,717.75/x
  3. Step 3: Cross multiply
    22,789.47x = 31,449.57 × 12,717.75
  4. Step 4: Simplify right side
    22,789.47x = 399,967,768.87
  5. Step 5: Solve for x
    x = 399,967,768.87/22,789.47
  6. Step 6: Final answer
    x = 17,550.55

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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.