Home / 12,516.96-17,268.48-8,739.12

Finding the Fourth Proportional to 12,516.96, 17,268.48 and 8,739.12

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Solution

The fourth proportional to 12,516.96, 17,268.48 and 8,739.12 is: 12,056.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.96 : 17,268.48 = 8,739.12 : x
  2. Step 2: Convert to fraction form
    12,516.96/17,268.48 = 8,739.12/x
  3. Step 3: Cross multiply
    12,516.96x = 17,268.48 × 8,739.12
  4. Step 4: Simplify right side
    12,516.96x = 150,911,318.94
  5. Step 5: Solve for x
    x = 150,911,318.94/12,516.96
  6. Step 6: Final answer
    x = 12,056.55

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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.