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Finding the Fourth Proportional to 13,324.80, 19,987.20 and 4,559.78

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Solution

The fourth proportional to 13,324.80, 19,987.20 and 4,559.78 is: 6,839.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.80 : 19,987.20 = 4,559.78 : x
  2. Step 2: Convert to fraction form
    13,324.80/19,987.20 = 4,559.78/x
  3. Step 3: Cross multiply
    13,324.80x = 19,987.20 × 4,559.78
  4. Step 4: Simplify right side
    13,324.80x = 91,137,234.82
  5. Step 5: Solve for x
    x = 91,137,234.82/13,324.80
  6. Step 6: Final answer
    x = 6,839.67

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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.