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Finding the Fourth Proportional to 12,222.21, 16,866.50 and 6,916.89

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Solution

The fourth proportional to 12,222.21, 16,866.50 and 6,916.89 is: 9,545.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,222.21 : 16,866.50 = 6,916.89 : x
  2. Step 2: Convert to fraction form
    12,222.21/16,866.50 = 6,916.89/x
  3. Step 3: Cross multiply
    12,222.21x = 16,866.50 × 6,916.89
  4. Step 4: Simplify right side
    12,222.21x = 116,663,725.19
  5. Step 5: Solve for x
    x = 116,663,725.19/12,222.21
  6. Step 6: Final answer
    x = 9,545.22

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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.