Home / 20,134.89-27,785.27-11,181.69

Finding the Fourth Proportional to 20,134.89, 27,785.27 and 11,181.69

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Solution

The fourth proportional to 20,134.89, 27,785.27 and 11,181.69 is: 15,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.89 : 27,785.27 = 11,181.69 : x
  2. Step 2: Convert to fraction form
    20,134.89/27,785.27 = 11,181.69/x
  3. Step 3: Cross multiply
    20,134.89x = 27,785.27 × 11,181.69
  4. Step 4: Simplify right side
    20,134.89x = 310,686,219.80
  5. Step 5: Solve for x
    x = 310,686,219.80/20,134.89
  6. Step 6: Final answer
    x = 15,430.24

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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.