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Finding the Fourth Proportional to 16,665.75, 22,999.01 and 9,213.75

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Solution

The fourth proportional to 16,665.75, 22,999.01 and 9,213.75 is: 12,715.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,665.75 : 22,999.01 = 9,213.75 : x
  2. Step 2: Convert to fraction form
    16,665.75/22,999.01 = 9,213.75/x
  3. Step 3: Cross multiply
    16,665.75x = 22,999.01 × 9,213.75
  4. Step 4: Simplify right side
    16,665.75x = 211,907,082.32
  5. Step 5: Solve for x
    x = 211,907,082.32/16,665.75
  6. Step 6: Final answer
    x = 12,715.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.