Home / 28,494.24-39,322.32-15,919.20

Finding the Fourth Proportional to 28,494.24, 39,322.32 and 15,919.20

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Solution

The fourth proportional to 28,494.24, 39,322.32 and 15,919.20 is: 21,968.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,494.24 : 39,322.32 = 15,919.20 : x
  2. Step 2: Convert to fraction form
    28,494.24/39,322.32 = 15,919.20/x
  3. Step 3: Cross multiply
    28,494.24x = 39,322.32 × 15,919.20
  4. Step 4: Simplify right side
    28,494.24x = 625,979,876.54
  5. Step 5: Solve for x
    x = 625,979,876.54/28,494.24
  6. Step 6: Final answer
    x = 21,968.65

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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.