Home / 21,118.15-29,181.60-20,093.35

Finding the Fourth Proportional to 21,118.15, 29,181.60 and 20,093.35

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Solution

The fourth proportional to 21,118.15, 29,181.60 and 20,093.35 is: 27,765.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.15 : 29,181.60 = 20,093.35 : x
  2. Step 2: Convert to fraction form
    21,118.15/29,181.60 = 20,093.35/x
  3. Step 3: Cross multiply
    21,118.15x = 29,181.60 × 20,093.35
  4. Step 4: Simplify right side
    21,118.15x = 586,356,102.36
  5. Step 5: Solve for x
    x = 586,356,102.36/21,118.15
  6. Step 6: Final answer
    x = 27,765.51

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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.