Home / 15,412.32-21,268.94-8,338.86

Finding the Fourth Proportional to 15,412.32, 21,268.94 and 8,338.86

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Solution

The fourth proportional to 15,412.32, 21,268.94 and 8,338.86 is: 11,507.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.32 : 21,268.94 = 8,338.86 : x
  2. Step 2: Convert to fraction form
    15,412.32/21,268.94 = 8,338.86/x
  3. Step 3: Cross multiply
    15,412.32x = 21,268.94 × 8,338.86
  4. Step 4: Simplify right side
    15,412.32x = 177,358,713.01
  5. Step 5: Solve for x
    x = 177,358,713.01/15,412.32
  6. Step 6: Final answer
    x = 11,507.59

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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.