Home / 11,867.21-16,376.22-6,489.50

Finding the Fourth Proportional to 11,867.21, 16,376.22 and 6,489.50

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Solution

The fourth proportional to 11,867.21, 16,376.22 and 6,489.50 is: 8,955.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,867.21 : 16,376.22 = 6,489.50 : x
  2. Step 2: Convert to fraction form
    11,867.21/16,376.22 = 6,489.50/x
  3. Step 3: Cross multiply
    11,867.21x = 16,376.22 × 6,489.50
  4. Step 4: Simplify right side
    11,867.21x = 106,273,479.69
  5. Step 5: Solve for x
    x = 106,273,479.69/11,867.21
  6. Step 6: Final answer
    x = 8,955.22

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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.