Home / 20,230.74-27,917.37-11,157.59

Finding the Fourth Proportional to 20,230.74, 27,917.37 and 11,157.59

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Solution

The fourth proportional to 20,230.74, 27,917.37 and 11,157.59 is: 15,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.74 : 27,917.37 = 11,157.59 : x
  2. Step 2: Convert to fraction form
    20,230.74/27,917.37 = 11,157.59/x
  3. Step 3: Cross multiply
    20,230.74x = 27,917.37 × 11,157.59
  4. Step 4: Simplify right side
    20,230.74x = 311,490,638.13
  5. Step 5: Solve for x
    x = 311,490,638.13/20,230.74
  6. Step 6: Final answer
    x = 15,396.90

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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.