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Finding the Fourth Proportional to 12,670.26, 19,008.49 and 8,929.34

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Solution

The fourth proportional to 12,670.26, 19,008.49 and 8,929.34 is: 13,396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.26 : 19,008.49 = 8,929.34 : x
  2. Step 2: Convert to fraction form
    12,670.26/19,008.49 = 8,929.34/x
  3. Step 3: Cross multiply
    12,670.26x = 19,008.49 × 8,929.34
  4. Step 4: Simplify right side
    12,670.26x = 169,733,270.10
  5. Step 5: Solve for x
    x = 169,733,270.10/12,670.26
  6. Step 6: Final answer
    x = 13,396.19

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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.