Home / 15,412.15-21,268.92-8,338.72

Finding the Fourth Proportional to 15,412.15, 21,268.92 and 8,338.72

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Solution

The fourth proportional to 15,412.15, 21,268.92 and 8,338.72 is: 11,507.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.15 : 21,268.92 = 8,338.72 : x
  2. Step 2: Convert to fraction form
    15,412.15/21,268.92 = 8,338.72/x
  3. Step 3: Cross multiply
    15,412.15x = 21,268.92 × 8,338.72
  4. Step 4: Simplify right side
    15,412.15x = 177,355,587.75
  5. Step 5: Solve for x
    x = 177,355,587.75/15,412.15
  6. Step 6: Final answer
    x = 11,507.52

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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.