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Finding the Fourth Proportional to 12,603.80, 17,400.74 and 11,202.55

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Solution

The fourth proportional to 12,603.80, 17,400.74 and 11,202.55 is: 15,466.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.80 : 17,400.74 = 11,202.55 : x
  2. Step 2: Convert to fraction form
    12,603.80/17,400.74 = 11,202.55/x
  3. Step 3: Cross multiply
    12,603.80x = 17,400.74 × 11,202.55
  4. Step 4: Simplify right side
    12,603.80x = 194,932,560.37
  5. Step 5: Solve for x
    x = 194,932,560.37/12,603.80
  6. Step 6: Final answer
    x = 15,466.17

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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.