Home / 39,764.72-54,874.22-21,859.74

Finding the Fourth Proportional to 39,764.72, 54,874.22 and 21,859.74

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Solution

The fourth proportional to 39,764.72, 54,874.22 and 21,859.74 is: 30,165.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,764.72 : 54,874.22 = 21,859.74 : x
  2. Step 2: Convert to fraction form
    39,764.72/54,874.22 = 21,859.74/x
  3. Step 3: Cross multiply
    39,764.72x = 54,874.22 × 21,859.74
  4. Step 4: Simplify right side
    39,764.72x = 1,199,536,181.90
  5. Step 5: Solve for x
    x = 1,199,536,181.90/39,764.72
  6. Step 6: Final answer
    x = 30,165.84

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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.