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Finding the Fourth Proportional to 10,663.16, 14,715 and 6,187.66

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Solution

The fourth proportional to 10,663.16, 14,715 and 6,187.66 is: 8,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,663.16 : 14,715 = 6,187.66 : x
  2. Step 2: Convert to fraction form
    10,663.16/14,715 = 6,187.66/x
  3. Step 3: Cross multiply
    10,663.16x = 14,715 × 6,187.66
  4. Step 4: Simplify right side
    10,663.16x = 91,051,380.11
  5. Step 5: Solve for x
    x = 91,051,380.11/10,663.16
  6. Step 6: Final answer
    x = 8,538.88

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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.