Home / 18,689.57-25,797.86-11,138.27

Finding the Fourth Proportional to 18,689.57, 25,797.86 and 11,138.27

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Solution

The fourth proportional to 18,689.57, 25,797.86 and 11,138.27 is: 15,374.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.57 : 25,797.86 = 11,138.27 : x
  2. Step 2: Convert to fraction form
    18,689.57/25,797.86 = 11,138.27/x
  3. Step 3: Cross multiply
    18,689.57x = 25,797.86 × 11,138.27
  4. Step 4: Simplify right side
    18,689.57x = 287,343,530.10
  5. Step 5: Solve for x
    x = 287,343,530.10/18,689.57
  6. Step 6: Final answer
    x = 15,374.54

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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.