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Finding the Fourth Proportional to 20,616.99, 30,941.88 and 7,473.12

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Solution

The fourth proportional to 20,616.99, 30,941.88 and 7,473.12 is: 11,215.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.99 : 30,941.88 = 7,473.12 : x
  2. Step 2: Convert to fraction form
    20,616.99/30,941.88 = 7,473.12/x
  3. Step 3: Cross multiply
    20,616.99x = 30,941.88 × 7,473.12
  4. Step 4: Simplify right side
    20,616.99x = 231,232,382.27
  5. Step 5: Solve for x
    x = 231,232,382.27/20,616.99
  6. Step 6: Final answer
    x = 11,215.62

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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.