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Finding the Fourth Proportional to 9,116.68, 13,687.98 and 8,699.08

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Solution

The fourth proportional to 9,116.68, 13,687.98 and 8,699.08 is: 13,060.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,116.68 : 13,687.98 = 8,699.08 : x
  2. Step 2: Convert to fraction form
    9,116.68/13,687.98 = 8,699.08/x
  3. Step 3: Cross multiply
    9,116.68x = 13,687.98 × 8,699.08
  4. Step 4: Simplify right side
    9,116.68x = 119,072,833.06
  5. Step 5: Solve for x
    x = 119,072,833.06/9,116.68
  6. Step 6: Final answer
    x = 13,060.99

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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.