Home / 20,309.28-28,027.42-11,357.16

Finding the Fourth Proportional to 20,309.28, 28,027.42 and 11,357.16

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Solution

The fourth proportional to 20,309.28, 28,027.42 and 11,357.16 is: 15,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.28 : 28,027.42 = 11,357.16 : x
  2. Step 2: Convert to fraction form
    20,309.28/28,027.42 = 11,357.16/x
  3. Step 3: Cross multiply
    20,309.28x = 28,027.42 × 11,357.16
  4. Step 4: Simplify right side
    20,309.28x = 318,311,893.33
  5. Step 5: Solve for x
    x = 318,311,893.33/20,309.28
  6. Step 6: Final answer
    x = 15,673.22

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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.