Home / 12,588.27-18,917.01-11,765.40

Finding the Fourth Proportional to 12,588.27, 18,917.01 and 11,765.40

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Solution

The fourth proportional to 12,588.27, 18,917.01 and 11,765.40 is: 17,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,588.27 : 18,917.01 = 11,765.40 : x
  2. Step 2: Convert to fraction form
    12,588.27/18,917.01 = 11,765.40/x
  3. Step 3: Cross multiply
    12,588.27x = 18,917.01 × 11,765.40
  4. Step 4: Simplify right side
    12,588.27x = 222,566,189.45
  5. Step 5: Solve for x
    x = 222,566,189.45/12,588.27
  6. Step 6: Final answer
    x = 17,680.44

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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.