Home / 21,679.11-32,531.40-9,198.18

Finding the Fourth Proportional to 21,679.11, 32,531.40 and 9,198.18

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Solution

The fourth proportional to 21,679.11, 32,531.40 and 9,198.18 is: 13,802.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.11 : 32,531.40 = 9,198.18 : x
  2. Step 2: Convert to fraction form
    21,679.11/32,531.40 = 9,198.18/x
  3. Step 3: Cross multiply
    21,679.11x = 32,531.40 × 9,198.18
  4. Step 4: Simplify right side
    21,679.11x = 299,229,672.85
  5. Step 5: Solve for x
    x = 299,229,672.85/21,679.11
  6. Step 6: Final answer
    x = 13,802.67

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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.