Home / 20,134.77-27,785.09-11,181.57

Finding the Fourth Proportional to 20,134.77, 27,785.09 and 11,181.57

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Solution

The fourth proportional to 20,134.77, 27,785.09 and 11,181.57 is: 15,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.77 : 27,785.09 = 11,181.57 : x
  2. Step 2: Convert to fraction form
    20,134.77/27,785.09 = 11,181.57/x
  3. Step 3: Cross multiply
    20,134.77x = 27,785.09 × 11,181.57
  4. Step 4: Simplify right side
    20,134.77x = 310,680,928.79
  5. Step 5: Solve for x
    x = 310,680,928.79/20,134.77
  6. Step 6: Final answer
    x = 15,430.07

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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.