Home / 29,965.12-41,306.40-21,578.56

Finding the Fourth Proportional to 29,965.12, 41,306.40 and 21,578.56

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Solution

The fourth proportional to 29,965.12, 41,306.40 and 21,578.56 is: 29,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,965.12 : 41,306.40 = 21,578.56 : x
  2. Step 2: Convert to fraction form
    29,965.12/41,306.40 = 21,578.56/x
  3. Step 3: Cross multiply
    29,965.12x = 41,306.40 × 21,578.56
  4. Step 4: Simplify right side
    29,965.12x = 891,332,630.78
  5. Step 5: Solve for x
    x = 891,332,630.78/29,965.12
  6. Step 6: Final answer
    x = 29,745.67

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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.