Home / 20,309.62-28,027.44-11,812.18

Finding the Fourth Proportional to 20,309.62, 28,027.44 and 11,812.18

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Solution

The fourth proportional to 20,309.62, 28,027.44 and 11,812.18 is: 16,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.62 : 28,027.44 = 11,812.18 : x
  2. Step 2: Convert to fraction form
    20,309.62/28,027.44 = 11,812.18/x
  3. Step 3: Cross multiply
    20,309.62x = 28,027.44 × 11,812.18
  4. Step 4: Simplify right side
    20,309.62x = 331,065,166.22
  5. Step 5: Solve for x
    x = 331,065,166.22/20,309.62
  6. Step 6: Final answer
    x = 16,300.90

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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.