Home / 20,134.31-27,784.91-11,181.65

Finding the Fourth Proportional to 20,134.31, 27,784.91 and 11,181.65

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Solution

The fourth proportional to 20,134.31, 27,784.91 and 11,181.65 is: 15,430.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.31 : 27,784.91 = 11,181.65 : x
  2. Step 2: Convert to fraction form
    20,134.31/27,784.91 = 11,181.65/x
  3. Step 3: Cross multiply
    20,134.31x = 27,784.91 × 11,181.65
  4. Step 4: Simplify right side
    20,134.31x = 310,681,027.93
  5. Step 5: Solve for x
    x = 310,681,027.93/20,134.31
  6. Step 6: Final answer
    x = 15,430.43

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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.