Home / 30,708.06-42,377.94-17,279.78

Finding the Fourth Proportional to 30,708.06, 42,377.94 and 17,279.78

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Solution

The fourth proportional to 30,708.06, 42,377.94 and 17,279.78 is: 23,846.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,708.06 : 42,377.94 = 17,279.78 : x
  2. Step 2: Convert to fraction form
    30,708.06/42,377.94 = 17,279.78/x
  3. Step 3: Cross multiply
    30,708.06x = 42,377.94 × 17,279.78
  4. Step 4: Simplify right side
    30,708.06x = 732,281,480.05
  5. Step 5: Solve for x
    x = 732,281,480.05/30,708.06
  6. Step 6: Final answer
    x = 23,846.56

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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.