Home / 20,748.16-28,634.85-11,550.64

Finding the Fourth Proportional to 20,748.16, 28,634.85 and 11,550.64

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Solution

The fourth proportional to 20,748.16, 28,634.85 and 11,550.64 is: 15,941.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.16 : 28,634.85 = 11,550.64 : x
  2. Step 2: Convert to fraction form
    20,748.16/28,634.85 = 11,550.64/x
  3. Step 3: Cross multiply
    20,748.16x = 28,634.85 × 11,550.64
  4. Step 4: Simplify right side
    20,748.16x = 330,750,843.80
  5. Step 5: Solve for x
    x = 330,750,843.80/20,748.16
  6. Step 6: Final answer
    x = 15,941.21

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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.