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Finding the Fourth Proportional to 12,668.09, 18,981.36 and 8,952.17

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Solution

The fourth proportional to 12,668.09, 18,981.36 and 8,952.17 is: 13,413.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.09 : 18,981.36 = 8,952.17 : x
  2. Step 2: Convert to fraction form
    12,668.09/18,981.36 = 8,952.17/x
  3. Step 3: Cross multiply
    12,668.09x = 18,981.36 × 8,952.17
  4. Step 4: Simplify right side
    12,668.09x = 169,924,266.64
  5. Step 5: Solve for x
    x = 169,924,266.64/12,668.09
  6. Step 6: Final answer
    x = 13,413.57

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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.