Home / 11,969.64-16,520.07-9,131.66

Finding the Fourth Proportional to 11,969.64, 16,520.07 and 9,131.66

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Solution

The fourth proportional to 11,969.64, 16,520.07 and 9,131.66 is: 12,603.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.64 : 16,520.07 = 9,131.66 : x
  2. Step 2: Convert to fraction form
    11,969.64/16,520.07 = 9,131.66/x
  3. Step 3: Cross multiply
    11,969.64x = 16,520.07 × 9,131.66
  4. Step 4: Simplify right side
    11,969.64x = 150,855,621.12
  5. Step 5: Solve for x
    x = 150,855,621.12/11,969.64
  6. Step 6: Final answer
    x = 12,603.19

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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.