Home / 26,765.20-36,921.09-21,079

Finding the Fourth Proportional to 26,765.20, 36,921.09 and 21,079

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Solution

The fourth proportional to 26,765.20, 36,921.09 and 21,079 is: 29,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,765.20 : 36,921.09 = 21,079 : x
  2. Step 2: Convert to fraction form
    26,765.20/36,921.09 = 21,079/x
  3. Step 3: Cross multiply
    26,765.20x = 36,921.09 × 21,079
  4. Step 4: Simplify right side
    26,765.20x = 778,259,656.11
  5. Step 5: Solve for x
    x = 778,259,656.11/26,765.20
  6. Step 6: Final answer
    x = 29,077.30

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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.