Home / 34,278.93-47,310.39-20,131.65

Finding the Fourth Proportional to 34,278.93, 47,310.39 and 20,131.65

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Solution

The fourth proportional to 34,278.93, 47,310.39 and 20,131.65 is: 27,784.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,278.93 : 47,310.39 = 20,131.65 : x
  2. Step 2: Convert to fraction form
    34,278.93/47,310.39 = 20,131.65/x
  3. Step 3: Cross multiply
    34,278.93x = 47,310.39 × 20,131.65
  4. Step 4: Simplify right side
    34,278.93x = 952,436,212.84
  5. Step 5: Solve for x
    x = 952,436,212.84/34,278.93
  6. Step 6: Final answer
    x = 27,784.89

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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.