Home / 12,456.96-17,189.76-6,867.20

Finding the Fourth Proportional to 12,456.96, 17,189.76 and 6,867.20

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Solution

The fourth proportional to 12,456.96, 17,189.76 and 6,867.20 is: 9,476.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.96 : 17,189.76 = 6,867.20 : x
  2. Step 2: Convert to fraction form
    12,456.96/17,189.76 = 6,867.20/x
  3. Step 3: Cross multiply
    12,456.96x = 17,189.76 × 6,867.20
  4. Step 4: Simplify right side
    12,456.96x = 118,045,519.87
  5. Step 5: Solve for x
    x = 118,045,519.87/12,456.96
  6. Step 6: Final answer
    x = 9,476.27

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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.