Home / 20,778.62-28,674.48-11,347.16

Finding the Fourth Proportional to 20,778.62, 28,674.48 and 11,347.16

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Solution

The fourth proportional to 20,778.62, 28,674.48 and 11,347.16 is: 15,659.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.62 : 28,674.48 = 11,347.16 : x
  2. Step 2: Convert to fraction form
    20,778.62/28,674.48 = 11,347.16/x
  3. Step 3: Cross multiply
    20,778.62x = 28,674.48 × 11,347.16
  4. Step 4: Simplify right side
    20,778.62x = 325,373,912.48
  5. Step 5: Solve for x
    x = 325,373,912.48/20,778.62
  6. Step 6: Final answer
    x = 15,659.07

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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.