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Finding the Fourth Proportional to 15,108.48, 20,842.98 and 10,067.78

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Solution

The fourth proportional to 15,108.48, 20,842.98 and 10,067.78 is: 13,889.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.48 : 20,842.98 = 10,067.78 : x
  2. Step 2: Convert to fraction form
    15,108.48/20,842.98 = 10,067.78/x
  3. Step 3: Cross multiply
    15,108.48x = 20,842.98 × 10,067.78
  4. Step 4: Simplify right side
    15,108.48x = 209,842,537.18
  5. Step 5: Solve for x
    x = 209,842,537.18/15,108.48
  6. Step 6: Final answer
    x = 13,889.06

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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.