Home / 11,805.75-16,292.10-6,428.38

Finding the Fourth Proportional to 11,805.75, 16,292.10 and 6,428.38

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Solution

The fourth proportional to 11,805.75, 16,292.10 and 6,428.38 is: 8,871.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,805.75 : 16,292.10 = 6,428.38 : x
  2. Step 2: Convert to fraction form
    11,805.75/16,292.10 = 6,428.38/x
  3. Step 3: Cross multiply
    11,805.75x = 16,292.10 × 6,428.38
  4. Step 4: Simplify right side
    11,805.75x = 104,731,777.66
  5. Step 5: Solve for x
    x = 104,731,777.66/11,805.75
  6. Step 6: Final answer
    x = 8,871.26

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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.