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Finding the Fourth Proportional to 20,401.56, 30,593.11 and 7,254.28

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Solution

The fourth proportional to 20,401.56, 30,593.11 and 7,254.28 is: 10,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.56 : 30,593.11 = 7,254.28 : x
  2. Step 2: Convert to fraction form
    20,401.56/30,593.11 = 7,254.28/x
  3. Step 3: Cross multiply
    20,401.56x = 30,593.11 × 7,254.28
  4. Step 4: Simplify right side
    20,401.56x = 221,930,986.01
  5. Step 5: Solve for x
    x = 221,930,986.01/20,401.56
  6. Step 6: Final answer
    x = 10,878.14

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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.