Home / 11,331.64-15,639.90-7,240.82

Finding the Fourth Proportional to 11,331.64, 15,639.90 and 7,240.82

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Solution

The fourth proportional to 11,331.64, 15,639.90 and 7,240.82 is: 9,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.64 : 15,639.90 = 7,240.82 : x
  2. Step 2: Convert to fraction form
    11,331.64/15,639.90 = 7,240.82/x
  3. Step 3: Cross multiply
    11,331.64x = 15,639.90 × 7,240.82
  4. Step 4: Simplify right side
    11,331.64x = 113,245,739.82
  5. Step 5: Solve for x
    x = 113,245,739.82/11,331.64
  6. Step 6: Final answer
    x = 9,993.77

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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.