Home / 39,765.57-54,876.66-21,861.73

Finding the Fourth Proportional to 39,765.57, 54,876.66 and 21,861.73

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Solution

The fourth proportional to 39,765.57, 54,876.66 and 21,861.73 is: 30,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.57 : 54,876.66 = 21,861.73 : x
  2. Step 2: Convert to fraction form
    39,765.57/54,876.66 = 21,861.73/x
  3. Step 3: Cross multiply
    39,765.57x = 54,876.66 × 21,861.73
  4. Step 4: Simplify right side
    39,765.57x = 1,199,698,895.29
  5. Step 5: Solve for x
    x = 1,199,698,895.29/39,765.57
  6. Step 6: Final answer
    x = 30,169.28

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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.