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Finding the Fourth Proportional to 12,336.16, 17,019.12 and 7,859.11

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Solution

The fourth proportional to 12,336.16, 17,019.12 and 7,859.11 is: 10,842.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,336.16 : 17,019.12 = 7,859.11 : x
  2. Step 2: Convert to fraction form
    12,336.16/17,019.12 = 7,859.11/x
  3. Step 3: Cross multiply
    12,336.16x = 17,019.12 × 7,859.11
  4. Step 4: Simplify right side
    12,336.16x = 133,755,136.18
  5. Step 5: Solve for x
    x = 133,755,136.18/12,336.16
  6. Step 6: Final answer
    x = 10,842.53

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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.