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Finding the Fourth Proportional to 14,399.67, 19,874.82 and 9,355.11

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Solution

The fourth proportional to 14,399.67, 19,874.82 and 9,355.11 is: 12,912.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,399.67 : 19,874.82 = 9,355.11 : x
  2. Step 2: Convert to fraction form
    14,399.67/19,874.82 = 9,355.11/x
  3. Step 3: Cross multiply
    14,399.67x = 19,874.82 × 9,355.11
  4. Step 4: Simplify right side
    14,399.67x = 185,931,127.33
  5. Step 5: Solve for x
    x = 185,931,127.33/14,399.67
  6. Step 6: Final answer
    x = 12,912.18

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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.