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Finding the Fourth Proportional to 29,481.88, 40,698.92 and 18,877.68

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Solution

The fourth proportional to 29,481.88, 40,698.92 and 18,877.68 is: 26,060.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,481.88 : 40,698.92 = 18,877.68 : x
  2. Step 2: Convert to fraction form
    29,481.88/40,698.92 = 18,877.68/x
  3. Step 3: Cross multiply
    29,481.88x = 40,698.92 × 18,877.68
  4. Step 4: Simplify right side
    29,481.88x = 768,301,188.11
  5. Step 5: Solve for x
    x = 768,301,188.11/29,481.88
  6. Step 6: Final answer
    x = 26,060.12

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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.