Home / 11,865.45-16,373.81-6,487.75

Finding the Fourth Proportional to 11,865.45, 16,373.81 and 6,487.75

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Solution

The fourth proportional to 11,865.45, 16,373.81 and 6,487.75 is: 8,952.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,865.45 : 16,373.81 = 6,487.75 : x
  2. Step 2: Convert to fraction form
    11,865.45/16,373.81 = 6,487.75/x
  3. Step 3: Cross multiply
    11,865.45x = 16,373.81 × 6,487.75
  4. Step 4: Simplify right side
    11,865.45x = 106,229,112.45
  5. Step 5: Solve for x
    x = 106,229,112.45/11,865.45
  6. Step 6: Final answer
    x = 8,952.81

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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.