Home / 20,552.72-30,828.60-11,781.20

Finding the Fourth Proportional to 20,552.72, 30,828.60 and 11,781.20

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Solution

The fourth proportional to 20,552.72, 30,828.60 and 11,781.20 is: 17,671.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.72 : 30,828.60 = 11,781.20 : x
  2. Step 2: Convert to fraction form
    20,552.72/30,828.60 = 11,781.20/x
  3. Step 3: Cross multiply
    20,552.72x = 30,828.60 × 11,781.20
  4. Step 4: Simplify right side
    20,552.72x = 363,197,902.32
  5. Step 5: Solve for x
    x = 363,197,902.32/20,552.72
  6. Step 6: Final answer
    x = 17,671.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.