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Finding the Fourth Proportional to 12,492.91, 17,235.73 and 8,019.12

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Solution

The fourth proportional to 12,492.91, 17,235.73 and 8,019.12 is: 11,063.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.91 : 17,235.73 = 8,019.12 : x
  2. Step 2: Convert to fraction form
    12,492.91/17,235.73 = 8,019.12/x
  3. Step 3: Cross multiply
    12,492.91x = 17,235.73 × 8,019.12
  4. Step 4: Simplify right side
    12,492.91x = 138,215,387.16
  5. Step 5: Solve for x
    x = 138,215,387.16/12,492.91
  6. Step 6: Final answer
    x = 11,063.51

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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.