Home / 18,683.75-25,781.54-11,512.41

Finding the Fourth Proportional to 18,683.75, 25,781.54 and 11,512.41

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Solution

The fourth proportional to 18,683.75, 25,781.54 and 11,512.41 is: 15,885.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.75 : 25,781.54 = 11,512.41 : x
  2. Step 2: Convert to fraction form
    18,683.75/25,781.54 = 11,512.41/x
  3. Step 3: Cross multiply
    18,683.75x = 25,781.54 × 11,512.41
  4. Step 4: Simplify right side
    18,683.75x = 296,807,601.35
  5. Step 5: Solve for x
    x = 296,807,601.35/18,683.75
  6. Step 6: Final answer
    x = 15,885.87

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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.