Home / 20,812.08-28,723.20-11,739.18

Finding the Fourth Proportional to 20,812.08, 28,723.20 and 11,739.18

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Solution

The fourth proportional to 20,812.08, 28,723.20 and 11,739.18 is: 16,201.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812.08 : 28,723.20 = 11,739.18 : x
  2. Step 2: Convert to fraction form
    20,812.08/28,723.20 = 11,739.18/x
  3. Step 3: Cross multiply
    20,812.08x = 28,723.20 × 11,739.18
  4. Step 4: Simplify right side
    20,812.08x = 337,186,814.98
  5. Step 5: Solve for x
    x = 337,186,814.98/20,812.08
  6. Step 6: Final answer
    x = 16,201.50

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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.