Home / 20,841.56-28,765.45-11,888.20

Finding the Fourth Proportional to 20,841.56, 28,765.45 and 11,888.20

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Solution

The fourth proportional to 20,841.56, 28,765.45 and 11,888.20 is: 16,408.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.56 : 28,765.45 = 11,888.20 : x
  2. Step 2: Convert to fraction form
    20,841.56/28,765.45 = 11,888.20/x
  3. Step 3: Cross multiply
    20,841.56x = 28,765.45 × 11,888.20
  4. Step 4: Simplify right side
    20,841.56x = 341,969,422.69
  5. Step 5: Solve for x
    x = 341,969,422.69/20,841.56
  6. Step 6: Final answer
    x = 16,408.05

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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.