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Finding the Fourth Proportional to 12,412.80, 18,623.52 and 11,531.52

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Solution

The fourth proportional to 12,412.80, 18,623.52 and 11,531.52 is: 17,301.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.80 : 18,623.52 = 11,531.52 : x
  2. Step 2: Convert to fraction form
    12,412.80/18,623.52 = 11,531.52/x
  3. Step 3: Cross multiply
    12,412.80x = 18,623.52 × 11,531.52
  4. Step 4: Simplify right side
    12,412.80x = 214,757,493.35
  5. Step 5: Solve for x
    x = 214,757,493.35/12,412.80
  6. Step 6: Final answer
    x = 17,301.29

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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.