Home / 13,309.96-18,379.56-8,282.80

Finding the Fourth Proportional to 13,309.96, 18,379.56 and 8,282.80

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Solution

The fourth proportional to 13,309.96, 18,379.56 and 8,282.80 is: 11,437.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.96 : 18,379.56 = 8,282.80 : x
  2. Step 2: Convert to fraction form
    13,309.96/18,379.56 = 8,282.80/x
  3. Step 3: Cross multiply
    13,309.96x = 18,379.56 × 8,282.80
  4. Step 4: Simplify right side
    13,309.96x = 152,234,219.57
  5. Step 5: Solve for x
    x = 152,234,219.57/13,309.96
  6. Step 6: Final answer
    x = 11,437.62

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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.