Home / 12,543.75-18,816.89-3,309.75

Finding the Fourth Proportional to 12,543.75, 18,816.89 and 3,309.75

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Solution

The fourth proportional to 12,543.75, 18,816.89 and 3,309.75 is: 4,964.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.75 : 18,816.89 = 3,309.75 : x
  2. Step 2: Convert to fraction form
    12,543.75/18,816.89 = 3,309.75/x
  3. Step 3: Cross multiply
    12,543.75x = 18,816.89 × 3,309.75
  4. Step 4: Simplify right side
    12,543.75x = 62,279,185.13
  5. Step 5: Solve for x
    x = 62,279,185.13/12,543.75
  6. Step 6: Final answer
    x = 4,964.96

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1.5x scale

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.