Home / 15,053.85-20,770.56-8,682.39

Finding the Fourth Proportional to 15,053.85, 20,770.56 and 8,682.39

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Solution

The fourth proportional to 15,053.85, 20,770.56 and 8,682.39 is: 11,979.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,053.85 : 20,770.56 = 8,682.39 : x
  2. Step 2: Convert to fraction form
    15,053.85/20,770.56 = 8,682.39/x
  3. Step 3: Cross multiply
    15,053.85x = 20,770.56 × 8,682.39
  4. Step 4: Simplify right side
    15,053.85x = 180,338,102.44
  5. Step 5: Solve for x
    x = 180,338,102.44/15,053.85
  6. Step 6: Final answer
    x = 11,979.53

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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.