Home / 20,933.82-28,889.16-11,502.57

Finding the Fourth Proportional to 20,933.82, 28,889.16 and 11,502.57

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Solution

The fourth proportional to 20,933.82, 28,889.16 and 11,502.57 is: 15,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.82 : 28,889.16 = 11,502.57 : x
  2. Step 2: Convert to fraction form
    20,933.82/28,889.16 = 11,502.57/x
  3. Step 3: Cross multiply
    20,933.82x = 28,889.16 × 11,502.57
  4. Step 4: Simplify right side
    20,933.82x = 332,299,585.14
  5. Step 5: Solve for x
    x = 332,299,585.14/20,933.82
  6. Step 6: Final answer
    x = 15,873.81

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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.