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Finding the Fourth Proportional to 17,780.88, 26,675.29 and 6,687.66

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Solution

The fourth proportional to 17,780.88, 26,675.29 and 6,687.66 is: 10,032.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,780.88 : 26,675.29 = 6,687.66 : x
  2. Step 2: Convert to fraction form
    17,780.88/26,675.29 = 6,687.66/x
  3. Step 3: Cross multiply
    17,780.88x = 26,675.29 × 6,687.66
  4. Step 4: Simplify right side
    17,780.88x = 178,395,315.76
  5. Step 5: Solve for x
    x = 178,395,315.76/17,780.88
  6. Step 6: Final answer
    x = 10,032.99

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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.