Home / 11,140.08-15,383.64-8,340.72

Finding the Fourth Proportional to 11,140.08, 15,383.64 and 8,340.72

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Solution

The fourth proportional to 11,140.08, 15,383.64 and 8,340.72 is: 11,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.08 : 15,383.64 = 8,340.72 : x
  2. Step 2: Convert to fraction form
    11,140.08/15,383.64 = 8,340.72/x
  3. Step 3: Cross multiply
    11,140.08x = 15,383.64 × 8,340.72
  4. Step 4: Simplify right side
    11,140.08x = 128,310,633.82
  5. Step 5: Solve for x
    x = 128,310,633.82/11,140.08
  6. Step 6: Final answer
    x = 11,517.93

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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.