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Finding the Fourth Proportional to 30,401.52, 41,942.02 and 20,313.98

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Solution

The fourth proportional to 30,401.52, 41,942.02 and 20,313.98 is: 28,025.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,401.52 : 41,942.02 = 20,313.98 : x
  2. Step 2: Convert to fraction form
    30,401.52/41,942.02 = 20,313.98/x
  3. Step 3: Cross multiply
    30,401.52x = 41,942.02 × 20,313.98
  4. Step 4: Simplify right side
    30,401.52x = 852,009,355.44
  5. Step 5: Solve for x
    x = 852,009,355.44/30,401.52
  6. Step 6: Final answer
    x = 28,025.22

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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.