Home / 11,699.20-16,147.11-6,986.08

Finding the Fourth Proportional to 11,699.20, 16,147.11 and 6,986.08

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Solution

The fourth proportional to 11,699.20, 16,147.11 and 6,986.08 is: 9,642.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,699.20 : 16,147.11 = 6,986.08 : x
  2. Step 2: Convert to fraction form
    11,699.20/16,147.11 = 6,986.08/x
  3. Step 3: Cross multiply
    11,699.20x = 16,147.11 × 6,986.08
  4. Step 4: Simplify right side
    11,699.20x = 112,805,002.23
  5. Step 5: Solve for x
    x = 112,805,002.23/11,699.20
  6. Step 6: Final answer
    x = 9,642.11

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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.