Home / 19,115.88-26,375.40-11,155.20

Finding the Fourth Proportional to 19,115.88, 26,375.40 and 11,155.20

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Solution

The fourth proportional to 19,115.88, 26,375.40 and 11,155.20 is: 15,391.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.88 : 26,375.40 = 11,155.20 : x
  2. Step 2: Convert to fraction form
    19,115.88/26,375.40 = 11,155.20/x
  3. Step 3: Cross multiply
    19,115.88x = 26,375.40 × 11,155.20
  4. Step 4: Simplify right side
    19,115.88x = 294,222,862.08
  5. Step 5: Solve for x
    x = 294,222,862.08/19,115.88
  6. Step 6: Final answer
    x = 15,391.54

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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.