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Finding the Fourth Proportional to 12,396.08, 17,081.16 and 11,521.04

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Solution

The fourth proportional to 12,396.08, 17,081.16 and 11,521.04 is: 15,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.08 : 17,081.16 = 11,521.04 : x
  2. Step 2: Convert to fraction form
    12,396.08/17,081.16 = 11,521.04/x
  3. Step 3: Cross multiply
    12,396.08x = 17,081.16 × 11,521.04
  4. Step 4: Simplify right side
    12,396.08x = 196,792,727.61
  5. Step 5: Solve for x
    x = 196,792,727.61/12,396.08
  6. Step 6: Final answer
    x = 15,875.40

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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.