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Finding the Fourth Proportional to 22,991.20, 34,477.98 and 8,949.40

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Solution

The fourth proportional to 22,991.20, 34,477.98 and 8,949.40 is: 13,420.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,991.20 : 34,477.98 = 8,949.40 : x
  2. Step 2: Convert to fraction form
    22,991.20/34,477.98 = 8,949.40/x
  3. Step 3: Cross multiply
    22,991.20x = 34,477.98 × 8,949.40
  4. Step 4: Simplify right side
    22,991.20x = 308,557,234.21
  5. Step 5: Solve for x
    x = 308,557,234.21/22,991.20
  6. Step 6: Final answer
    x = 13,420.67

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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.