Home / 20,401.49-30,602.10-11,100.64

Finding the Fourth Proportional to 20,401.49, 30,602.10 and 11,100.64

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Solution

The fourth proportional to 20,401.49, 30,602.10 and 11,100.64 is: 16,650.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.49 : 30,602.10 = 11,100.64 : x
  2. Step 2: Convert to fraction form
    20,401.49/30,602.10 = 11,100.64/x
  3. Step 3: Cross multiply
    20,401.49x = 30,602.10 × 11,100.64
  4. Step 4: Simplify right side
    20,401.49x = 339,702,839.84
  5. Step 5: Solve for x
    x = 339,702,839.84/20,401.49
  6. Step 6: Final answer
    x = 16,650.88

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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.