Home / 20,029.96-27,641.64-11,078.20

Finding the Fourth Proportional to 20,029.96, 27,641.64 and 11,078.20

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Solution

The fourth proportional to 20,029.96, 27,641.64 and 11,078.20 is: 15,288.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,029.96 : 27,641.64 = 11,078.20 : x
  2. Step 2: Convert to fraction form
    20,029.96/27,641.64 = 11,078.20/x
  3. Step 3: Cross multiply
    20,029.96x = 27,641.64 × 11,078.20
  4. Step 4: Simplify right side
    20,029.96x = 306,219,616.25
  5. Step 5: Solve for x
    x = 306,219,616.25/20,029.96
  6. Step 6: Final answer
    x = 15,288.08

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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.