Home / 19,149.10-26,428.92-11,189.78

Finding the Fourth Proportional to 19,149.10, 26,428.92 and 11,189.78

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Solution

The fourth proportional to 19,149.10, 26,428.92 and 11,189.78 is: 15,443.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.10 : 26,428.92 = 11,189.78 : x
  2. Step 2: Convert to fraction form
    19,149.10/26,428.92 = 11,189.78/x
  3. Step 3: Cross multiply
    19,149.10x = 26,428.92 × 11,189.78
  4. Step 4: Simplify right side
    19,149.10x = 295,733,800.44
  5. Step 5: Solve for x
    x = 295,733,800.44/19,149.10
  6. Step 6: Final answer
    x = 15,443.74

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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.