Home / 11,439.86-15,789.47-6,965.09

Finding the Fourth Proportional to 11,439.86, 15,789.47 and 6,965.09

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Solution

The fourth proportional to 11,439.86, 15,789.47 and 6,965.09 is: 9,613.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.86 : 15,789.47 = 6,965.09 : x
  2. Step 2: Convert to fraction form
    11,439.86/15,789.47 = 6,965.09/x
  3. Step 3: Cross multiply
    11,439.86x = 15,789.47 × 6,965.09
  4. Step 4: Simplify right side
    11,439.86x = 109,975,079.60
  5. Step 5: Solve for x
    x = 109,975,079.60/11,439.86
  6. Step 6: Final answer
    x = 9,613.32

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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.