Home / 39,668.60-54,742.20-21,763.76

Finding the Fourth Proportional to 39,668.60, 54,742.20 and 21,763.76

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Solution

The fourth proportional to 39,668.60, 54,742.20 and 21,763.76 is: 30,033.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,668.60 : 54,742.20 = 21,763.76 : x
  2. Step 2: Convert to fraction form
    39,668.60/54,742.20 = 21,763.76/x
  3. Step 3: Cross multiply
    39,668.60x = 54,742.20 × 21,763.76
  4. Step 4: Simplify right side
    39,668.60x = 1,191,396,102.67
  5. Step 5: Solve for x
    x = 1,191,396,102.67/39,668.60
  6. Step 6: Final answer
    x = 30,033.73

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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.