Home / 18,682.40-25,785.96-11,132.78

Finding the Fourth Proportional to 18,682.40, 25,785.96 and 11,132.78

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Solution

The fourth proportional to 18,682.40, 25,785.96 and 11,132.78 is: 15,365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.40 : 25,785.96 = 11,132.78 : x
  2. Step 2: Convert to fraction form
    18,682.40/25,785.96 = 11,132.78/x
  3. Step 3: Cross multiply
    18,682.40x = 25,785.96 × 11,132.78
  4. Step 4: Simplify right side
    18,682.40x = 287,069,419.77
  5. Step 5: Solve for x
    x = 287,069,419.77/18,682.40
  6. Step 6: Final answer
    x = 15,365.77

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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.