Home / 20,145.92-27,796.38-12,580.52

Finding the Fourth Proportional to 20,145.92, 27,796.38 and 12,580.52

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Solution

The fourth proportional to 20,145.92, 27,796.38 and 12,580.52 is: 17,358.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.92 : 27,796.38 = 12,580.52 : x
  2. Step 2: Convert to fraction form
    20,145.92/27,796.38 = 12,580.52/x
  3. Step 3: Cross multiply
    20,145.92x = 27,796.38 × 12,580.52
  4. Step 4: Simplify right side
    20,145.92x = 349,692,914.52
  5. Step 5: Solve for x
    x = 349,692,914.52/20,145.92
  6. Step 6: Final answer
    x = 17,358.00

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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.