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Finding the Fourth Proportional to 13,105.88, 19,648.02 and 8,712.44

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Solution

The fourth proportional to 13,105.88, 19,648.02 and 8,712.44 is: 13,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.88 : 19,648.02 = 8,712.44 : x
  2. Step 2: Convert to fraction form
    13,105.88/19,648.02 = 8,712.44/x
  3. Step 3: Cross multiply
    13,105.88x = 19,648.02 × 8,712.44
  4. Step 4: Simplify right side
    13,105.88x = 171,182,195.37
  5. Step 5: Solve for x
    x = 171,182,195.37/13,105.88
  6. Step 6: Final answer
    x = 13,061.48

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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.