Home / 11,986.95-16,517.68-9,281.85

Finding the Fourth Proportional to 11,986.95, 16,517.68 and 9,281.85

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Solution

The fourth proportional to 11,986.95, 16,517.68 and 9,281.85 is: 12,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.95 : 16,517.68 = 9,281.85 : x
  2. Step 2: Convert to fraction form
    11,986.95/16,517.68 = 9,281.85/x
  3. Step 3: Cross multiply
    11,986.95x = 16,517.68 × 9,281.85
  4. Step 4: Simplify right side
    11,986.95x = 153,314,628.11
  5. Step 5: Solve for x
    x = 153,314,628.11/11,986.95
  6. Step 6: Final answer
    x = 12,790.13

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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.