Home / 15,268.24-21,067.32-8,978.32

Finding the Fourth Proportional to 15,268.24, 21,067.32 and 8,978.32

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Solution

The fourth proportional to 15,268.24, 21,067.32 and 8,978.32 is: 12,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,268.24 : 21,067.32 = 8,978.32 : x
  2. Step 2: Convert to fraction form
    15,268.24/21,067.32 = 8,978.32/x
  3. Step 3: Cross multiply
    15,268.24x = 21,067.32 × 8,978.32
  4. Step 4: Simplify right side
    15,268.24x = 189,149,140.50
  5. Step 5: Solve for x
    x = 189,149,140.50/15,268.24
  6. Step 6: Final answer
    x = 12,388.40

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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.