Home / 20,241.33-27,931.57-11,289.34

Finding the Fourth Proportional to 20,241.33, 27,931.57 and 11,289.34

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Solution

The fourth proportional to 20,241.33, 27,931.57 and 11,289.34 is: 15,578.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,241.33 : 27,931.57 = 11,289.34 : x
  2. Step 2: Convert to fraction form
    20,241.33/27,931.57 = 11,289.34/x
  3. Step 3: Cross multiply
    20,241.33x = 27,931.57 × 11,289.34
  4. Step 4: Simplify right side
    20,241.33x = 315,328,990.46
  5. Step 5: Solve for x
    x = 315,328,990.46/20,241.33
  6. Step 6: Final answer
    x = 15,578.47

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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.