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Finding the Fourth Proportional to 12,391.54, 18,569.83 and 9,605.14

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Solution

The fourth proportional to 12,391.54, 18,569.83 and 9,605.14 is: 14,394.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.54 : 18,569.83 = 9,605.14 : x
  2. Step 2: Convert to fraction form
    12,391.54/18,569.83 = 9,605.14/x
  3. Step 3: Cross multiply
    12,391.54x = 18,569.83 × 9,605.14
  4. Step 4: Simplify right side
    12,391.54x = 178,365,792.91
  5. Step 5: Solve for x
    x = 178,365,792.91/12,391.54
  6. Step 6: Final answer
    x = 14,394.16

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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.