Home / 20,734.72-28,612.88-11,781.04

Finding the Fourth Proportional to 20,734.72, 28,612.88 and 11,781.04

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Solution

The fourth proportional to 20,734.72, 28,612.88 and 11,781.04 is: 16,257.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.72 : 28,612.88 = 11,781.04 : x
  2. Step 2: Convert to fraction form
    20,734.72/28,612.88 = 11,781.04/x
  3. Step 3: Cross multiply
    20,734.72x = 28,612.88 × 11,781.04
  4. Step 4: Simplify right side
    20,734.72x = 337,089,483.80
  5. Step 5: Solve for x
    x = 337,089,483.80/20,734.72
  6. Step 6: Final answer
    x = 16,257.25

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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.