Home / 11,209.37-16,781.40-8,736.65

Finding the Fourth Proportional to 11,209.37, 16,781.40 and 8,736.65

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Solution

The fourth proportional to 11,209.37, 16,781.40 and 8,736.65 is: 13,079.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.37 : 16,781.40 = 8,736.65 : x
  2. Step 2: Convert to fraction form
    11,209.37/16,781.40 = 8,736.65/x
  3. Step 3: Cross multiply
    11,209.37x = 16,781.40 × 8,736.65
  4. Step 4: Simplify right side
    11,209.37x = 146,613,134.40
  5. Step 5: Solve for x
    x = 146,613,134.40/11,209.37
  6. Step 6: Final answer
    x = 13,079.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.