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Finding the Fourth Proportional to 11,687.88, 17,531.98 and 6,526.60

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Solution

The fourth proportional to 11,687.88, 17,531.98 and 6,526.60 is: 9,789.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.88 : 17,531.98 = 6,526.60 : x
  2. Step 2: Convert to fraction form
    11,687.88/17,531.98 = 6,526.60/x
  3. Step 3: Cross multiply
    11,687.88x = 17,531.98 × 6,526.60
  4. Step 4: Simplify right side
    11,687.88x = 114,424,220.67
  5. Step 5: Solve for x
    x = 114,424,220.67/11,687.88
  6. Step 6: Final answer
    x = 9,789.99

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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.