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Finding the Fourth Proportional to 12,623.67, 17,420.93 and 6,958.64

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Solution

The fourth proportional to 12,623.67, 17,420.93 and 6,958.64 is: 9,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.67 : 17,420.93 = 6,958.64 : x
  2. Step 2: Convert to fraction form
    12,623.67/17,420.93 = 6,958.64/x
  3. Step 3: Cross multiply
    12,623.67x = 17,420.93 × 6,958.64
  4. Step 4: Simplify right side
    12,623.67x = 121,225,858.44
  5. Step 5: Solve for x
    x = 121,225,858.44/12,623.67
  6. Step 6: Final answer
    x = 9,603.06

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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.