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Finding the Fourth Proportional to 11,460.99, 15,817.62 and 6,986.15

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Solution

The fourth proportional to 11,460.99, 15,817.62 and 6,986.15 is: 9,641.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,460.99 : 15,817.62 = 6,986.15 : x
  2. Step 2: Convert to fraction form
    11,460.99/15,817.62 = 6,986.15/x
  3. Step 3: Cross multiply
    11,460.99x = 15,817.62 × 6,986.15
  4. Step 4: Simplify right side
    11,460.99x = 110,504,186.87
  5. Step 5: Solve for x
    x = 110,504,186.87/11,460.99
  6. Step 6: Final answer
    x = 9,641.77

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1.5x scale

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.