Home / 11,319.40-16,964.70-8,237.80

Finding the Fourth Proportional to 11,319.40, 16,964.70 and 8,237.80

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Solution

The fourth proportional to 11,319.40, 16,964.70 and 8,237.80 is: 12,346.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.40 : 16,964.70 = 8,237.80 : x
  2. Step 2: Convert to fraction form
    11,319.40/16,964.70 = 8,237.80/x
  3. Step 3: Cross multiply
    11,319.40x = 16,964.70 × 8,237.80
  4. Step 4: Simplify right side
    11,319.40x = 139,751,805.66
  5. Step 5: Solve for x
    x = 139,751,805.66/11,319.40
  6. Step 6: Final answer
    x = 12,346.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.