Home / 20,401.11-28,154.04-11,449.33

Finding the Fourth Proportional to 20,401.11, 28,154.04 and 11,449.33

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Solution

The fourth proportional to 20,401.11, 28,154.04 and 11,449.33 is: 15,800.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.11 : 28,154.04 = 11,449.33 : x
  2. Step 2: Convert to fraction form
    20,401.11/28,154.04 = 11,449.33/x
  3. Step 3: Cross multiply
    20,401.11x = 28,154.04 × 11,449.33
  4. Step 4: Simplify right side
    20,401.11x = 322,344,894.79
  5. Step 5: Solve for x
    x = 322,344,894.79/20,401.11
  6. Step 6: Final answer
    x = 15,800.36

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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.