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Finding the Fourth Proportional to 12,603.05, 17,392.62 and 6,938.21

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Solution

The fourth proportional to 12,603.05, 17,392.62 and 6,938.21 is: 9,574.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.05 : 17,392.62 = 6,938.21 : x
  2. Step 2: Convert to fraction form
    12,603.05/17,392.62 = 6,938.21/x
  3. Step 3: Cross multiply
    12,603.05x = 17,392.62 × 6,938.21
  4. Step 4: Simplify right side
    12,603.05x = 120,673,650.01
  5. Step 5: Solve for x
    x = 120,673,650.01/12,603.05
  6. Step 6: Final answer
    x = 9,574.96

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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.