Home / 12,623.42-17,420.66-6,958.78

Finding the Fourth Proportional to 12,623.42, 17,420.66 and 6,958.78

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Solution

The fourth proportional to 12,623.42, 17,420.66 and 6,958.78 is: 9,603.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.42 : 17,420.66 = 6,958.78 : x
  2. Step 2: Convert to fraction form
    12,623.42/17,420.66 = 6,958.78/x
  3. Step 3: Cross multiply
    12,623.42x = 17,420.66 × 6,958.78
  4. Step 4: Simplify right side
    12,623.42x = 121,226,540.39
  5. Step 5: Solve for x
    x = 121,226,540.39/12,623.42
  6. Step 6: Final answer
    x = 9,603.30

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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.