Home / 13,679.22-20,521.56-4,320.66

Finding the Fourth Proportional to 13,679.22, 20,521.56 and 4,320.66

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Solution

The fourth proportional to 13,679.22, 20,521.56 and 4,320.66 is: 6,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.22 : 20,521.56 = 4,320.66 : x
  2. Step 2: Convert to fraction form
    13,679.22/20,521.56 = 4,320.66/x
  3. Step 3: Cross multiply
    13,679.22x = 20,521.56 × 4,320.66
  4. Step 4: Simplify right side
    13,679.22x = 88,666,683.43
  5. Step 5: Solve for x
    x = 88,666,683.43/13,679.22
  6. Step 6: Final answer
    x = 6,481.85

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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.