Home / 9,147.36-12,618.99-6,625.38

Finding the Fourth Proportional to 9,147.36, 12,618.99 and 6,625.38

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Solution

The fourth proportional to 9,147.36, 12,618.99 and 6,625.38 is: 9,139.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,147.36 : 12,618.99 = 6,625.38 : x
  2. Step 2: Convert to fraction form
    9,147.36/12,618.99 = 6,625.38/x
  3. Step 3: Cross multiply
    9,147.36x = 12,618.99 × 6,625.38
  4. Step 4: Simplify right side
    9,147.36x = 83,605,603.97
  5. Step 5: Solve for x
    x = 83,605,603.97/9,147.36
  6. Step 6: Final answer
    x = 9,139.86

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Half scale
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Similar ratio
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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.