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Finding the Fourth Proportional to 10,690.56, 14,755.50 and 6,498

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Solution

The fourth proportional to 10,690.56, 14,755.50 and 6,498 is: 8,968.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,690.56 : 14,755.50 = 6,498 : x
  2. Step 2: Convert to fraction form
    10,690.56/14,755.50 = 6,498/x
  3. Step 3: Cross multiply
    10,690.56x = 14,755.50 × 6,498
  4. Step 4: Simplify right side
    10,690.56x = 95,881,239
  5. Step 5: Solve for x
    x = 95,881,239/10,690.56
  6. Step 6: Final answer
    x = 8,968.78

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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.