Home / 20,181.52-27,856.60-13,108.96

Finding the Fourth Proportional to 20,181.52, 27,856.60 and 13,108.96

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Solution

The fourth proportional to 20,181.52, 27,856.60 and 13,108.96 is: 18,094.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.52 : 27,856.60 = 13,108.96 : x
  2. Step 2: Convert to fraction form
    20,181.52/27,856.60 = 13,108.96/x
  3. Step 3: Cross multiply
    20,181.52x = 27,856.60 × 13,108.96
  4. Step 4: Simplify right side
    20,181.52x = 365,171,055.14
  5. Step 5: Solve for x
    x = 365,171,055.14/20,181.52
  6. Step 6: Final answer
    x = 18,094.33

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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.