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Finding the Fourth Proportional to 17,779.89, 26,649.30 and 6,679.49

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Solution

The fourth proportional to 17,779.89, 26,649.30 and 6,679.49 is: 10,011.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,779.89 : 26,649.30 = 6,679.49 : x
  2. Step 2: Convert to fraction form
    17,779.89/26,649.30 = 6,679.49/x
  3. Step 3: Cross multiply
    17,779.89x = 26,649.30 × 6,679.49
  4. Step 4: Simplify right side
    17,779.89x = 178,003,599.61
  5. Step 5: Solve for x
    x = 178,003,599.61/17,779.89
  6. Step 6: Final answer
    x = 10,011.51

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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.