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Finding the Fourth Proportional to 30,401.18, 45,652.22 and 18,788.22

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Solution

The fourth proportional to 30,401.18, 45,652.22 and 18,788.22 is: 28,213.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,401.18 : 45,652.22 = 18,788.22 : x
  2. Step 2: Convert to fraction form
    30,401.18/45,652.22 = 18,788.22/x
  3. Step 3: Cross multiply
    30,401.18x = 45,652.22 × 18,788.22
  4. Step 4: Simplify right side
    30,401.18x = 857,723,952.85
  5. Step 5: Solve for x
    x = 857,723,952.85/30,401.18
  6. Step 6: Final answer
    x = 28,213.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.