Home / 20,401.26-28,155.18-11,327.10

Finding the Fourth Proportional to 20,401.26, 28,155.18 and 11,327.10

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Solution

The fourth proportional to 20,401.26, 28,155.18 and 11,327.10 is: 15,632.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.26 : 28,155.18 = 11,327.10 : x
  2. Step 2: Convert to fraction form
    20,401.26/28,155.18 = 11,327.10/x
  3. Step 3: Cross multiply
    20,401.26x = 28,155.18 × 11,327.10
  4. Step 4: Simplify right side
    20,401.26x = 318,916,539.38
  5. Step 5: Solve for x
    x = 318,916,539.38/20,401.26
  6. Step 6: Final answer
    x = 15,632.20

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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.