Home / 39,679.32-54,754.92-21,770.76

Finding the Fourth Proportional to 39,679.32, 54,754.92 and 21,770.76

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Solution

The fourth proportional to 39,679.32, 54,754.92 and 21,770.76 is: 30,042.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.32 : 54,754.92 = 21,770.76 : x
  2. Step 2: Convert to fraction form
    39,679.32/54,754.92 = 21,770.76/x
  3. Step 3: Cross multiply
    39,679.32x = 54,754.92 × 21,770.76
  4. Step 4: Simplify right side
    39,679.32x = 1,192,056,222.14
  5. Step 5: Solve for x
    x = 1,192,056,222.14/39,679.32
  6. Step 6: Final answer
    x = 30,042.25

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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.