Home / 39,764.76-54,875.48-21,861.60

Finding the Fourth Proportional to 39,764.76, 54,875.48 and 21,861.60

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Solution

The fourth proportional to 39,764.76, 54,875.48 and 21,861.60 is: 30,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,764.76 : 54,875.48 = 21,861.60 : x
  2. Step 2: Convert to fraction form
    39,764.76/54,875.48 = 21,861.60/x
  3. Step 3: Cross multiply
    39,764.76x = 54,875.48 × 21,861.60
  4. Step 4: Simplify right side
    39,764.76x = 1,199,665,793.57
  5. Step 5: Solve for x
    x = 1,199,665,793.57/39,764.76
  6. Step 6: Final answer
    x = 30,169.07

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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.