Home / 11,713.50-16,164.29-6,408.20

Finding the Fourth Proportional to 11,713.50, 16,164.29 and 6,408.20

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Solution

The fourth proportional to 11,713.50, 16,164.29 and 6,408.20 is: 8,843.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,713.50 : 16,164.29 = 6,408.20 : x
  2. Step 2: Convert to fraction form
    11,713.50/16,164.29 = 6,408.20/x
  3. Step 3: Cross multiply
    11,713.50x = 16,164.29 × 6,408.20
  4. Step 4: Simplify right side
    11,713.50x = 103,584,059.61
  5. Step 5: Solve for x
    x = 103,584,059.61/11,713.50
  6. Step 6: Final answer
    x = 8,843.13

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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.