Home / 18,683.68-25,782.40-11,138.52

Finding the Fourth Proportional to 18,683.68, 25,782.40 and 11,138.52

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Solution

The fourth proportional to 18,683.68, 25,782.40 and 11,138.52 is: 15,370.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.68 : 25,782.40 = 11,138.52 : x
  2. Step 2: Convert to fraction form
    18,683.68/25,782.40 = 11,138.52/x
  3. Step 3: Cross multiply
    18,683.68x = 25,782.40 × 11,138.52
  4. Step 4: Simplify right side
    18,683.68x = 287,177,778.05
  5. Step 5: Solve for x
    x = 287,177,778.05/18,683.68
  6. Step 6: Final answer
    x = 15,370.51

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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.