Home / 20,763.87-28,654.34-11,332.44

Finding the Fourth Proportional to 20,763.87, 28,654.34 and 11,332.44

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Solution

The fourth proportional to 20,763.87, 28,654.34 and 11,332.44 is: 15,638.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.87 : 28,654.34 = 11,332.44 : x
  2. Step 2: Convert to fraction form
    20,763.87/28,654.34 = 11,332.44/x
  3. Step 3: Cross multiply
    20,763.87x = 28,654.34 × 11,332.44
  4. Step 4: Simplify right side
    20,763.87x = 324,723,588.79
  5. Step 5: Solve for x
    x = 324,723,588.79/20,763.87
  6. Step 6: Final answer
    x = 15,638.88

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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.