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Finding the Fourth Proportional to 12,222.28, 16,866.08 and 6,916.24

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Solution

The fourth proportional to 12,222.28, 16,866.08 and 6,916.24 is: 9,544.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,222.28 : 16,866.08 = 6,916.24 : x
  2. Step 2: Convert to fraction form
    12,222.28/16,866.08 = 6,916.24/x
  3. Step 3: Cross multiply
    12,222.28x = 16,866.08 × 6,916.24
  4. Step 4: Simplify right side
    12,222.28x = 116,649,857.14
  5. Step 5: Solve for x
    x = 116,649,857.14/12,222.28
  6. Step 6: Final answer
    x = 9,544.03

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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.