Home / 30,351.60-41,893.20-21,401.76

Finding the Fourth Proportional to 30,351.60, 41,893.20 and 21,401.76

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Solution

The fourth proportional to 30,351.60, 41,893.20 and 21,401.76 is: 29,540.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351.60 : 41,893.20 = 21,401.76 : x
  2. Step 2: Convert to fraction form
    30,351.60/41,893.20 = 21,401.76/x
  3. Step 3: Cross multiply
    30,351.60x = 41,893.20 × 21,401.76
  4. Step 4: Simplify right side
    30,351.60x = 896,588,212.03
  5. Step 5: Solve for x
    x = 896,588,212.03/30,351.60
  6. Step 6: Final answer
    x = 29,540.06

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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.