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Finding the Fourth Proportional to 21,470.96, 32,211.48 and 8,324.48

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Solution

The fourth proportional to 21,470.96, 32,211.48 and 8,324.48 is: 12,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.96 : 32,211.48 = 8,324.48 : x
  2. Step 2: Convert to fraction form
    21,470.96/32,211.48 = 8,324.48/x
  3. Step 3: Cross multiply
    21,470.96x = 32,211.48 × 8,324.48
  4. Step 4: Simplify right side
    21,470.96x = 268,143,821.03
  5. Step 5: Solve for x
    x = 268,143,821.03/21,470.96
  6. Step 6: Final answer
    x = 12,488.67

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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.