Home / 11,817.29-16,308.07-6,439.91

Finding the Fourth Proportional to 11,817.29, 16,308.07 and 6,439.91

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Solution

The fourth proportional to 11,817.29, 16,308.07 and 6,439.91 is: 8,887.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.29 : 16,308.07 = 6,439.91 : x
  2. Step 2: Convert to fraction form
    11,817.29/16,308.07 = 6,439.91/x
  3. Step 3: Cross multiply
    11,817.29x = 16,308.07 × 6,439.91
  4. Step 4: Simplify right side
    11,817.29x = 105,022,405.43
  5. Step 5: Solve for x
    x = 105,022,405.43/11,817.29
  6. Step 6: Final answer
    x = 8,887.18

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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.