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Finding the Fourth Proportional to 12,603.78, 17,393.67 and 7,227.05

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Solution

The fourth proportional to 12,603.78, 17,393.67 and 7,227.05 is: 9,973.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.78 : 17,393.67 = 7,227.05 : x
  2. Step 2: Convert to fraction form
    12,603.78/17,393.67 = 7,227.05/x
  3. Step 3: Cross multiply
    12,603.78x = 17,393.67 × 7,227.05
  4. Step 4: Simplify right side
    12,603.78x = 125,704,873.93
  5. Step 5: Solve for x
    x = 125,704,873.93/12,603.78
  6. Step 6: Final answer
    x = 9,973.59

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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.