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Finding the Fourth Proportional to 20,401.80, 30,597.03 and 5,607.15

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Solution

The fourth proportional to 20,401.80, 30,597.03 and 5,607.15 is: 8,409.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.80 : 30,597.03 = 5,607.15 : x
  2. Step 2: Convert to fraction form
    20,401.80/30,597.03 = 5,607.15/x
  3. Step 3: Cross multiply
    20,401.80x = 30,597.03 × 5,607.15
  4. Step 4: Simplify right side
    20,401.80x = 171,562,136.76
  5. Step 5: Solve for x
    x = 171,562,136.76/20,401.80
  6. Step 6: Final answer
    x = 8,409.17

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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.