Home / 20,401.88-28,157.19-11,452.28

Finding the Fourth Proportional to 20,401.88, 28,157.19 and 11,452.28

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Solution

The fourth proportional to 20,401.88, 28,157.19 and 11,452.28 is: 15,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.88 : 28,157.19 = 11,452.28 : x
  2. Step 2: Convert to fraction form
    20,401.88/28,157.19 = 11,452.28/x
  3. Step 3: Cross multiply
    20,401.88x = 28,157.19 × 11,452.28
  4. Step 4: Simplify right side
    20,401.88x = 322,463,883.11
  5. Step 5: Solve for x
    x = 322,463,883.11/20,401.88
  6. Step 6: Final answer
    x = 15,805.60

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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.