Home / 20,773.58-28,663.68-11,820.55

Finding the Fourth Proportional to 20,773.58, 28,663.68 and 11,820.55

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Solution

The fourth proportional to 20,773.58, 28,663.68 and 11,820.55 is: 16,310.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.58 : 28,663.68 = 11,820.55 : x
  2. Step 2: Convert to fraction form
    20,773.58/28,663.68 = 11,820.55/x
  3. Step 3: Cross multiply
    20,773.58x = 28,663.68 × 11,820.55
  4. Step 4: Simplify right side
    20,773.58x = 338,820,462.62
  5. Step 5: Solve for x
    x = 338,820,462.62/20,773.58
  6. Step 6: Final answer
    x = 16,310.16

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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.