Home / 11,139.54-15,372.36-6,605.27

Finding the Fourth Proportional to 11,139.54, 15,372.36 and 6,605.27

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Solution

The fourth proportional to 11,139.54, 15,372.36 and 6,605.27 is: 9,115.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.54 : 15,372.36 = 6,605.27 : x
  2. Step 2: Convert to fraction form
    11,139.54/15,372.36 = 6,605.27/x
  3. Step 3: Cross multiply
    11,139.54x = 15,372.36 × 6,605.27
  4. Step 4: Simplify right side
    11,139.54x = 101,538,544.35
  5. Step 5: Solve for x
    x = 101,538,544.35/11,139.54
  6. Step 6: Final answer
    x = 9,115.15

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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.