Home / 20,401.16-28,154.84-11,449.23

Finding the Fourth Proportional to 20,401.16, 28,154.84 and 11,449.23

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Solution

The fourth proportional to 20,401.16, 28,154.84 and 11,449.23 is: 15,800.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.16 : 28,154.84 = 11,449.23 : x
  2. Step 2: Convert to fraction form
    20,401.16/28,154.84 = 11,449.23/x
  3. Step 3: Cross multiply
    20,401.16x = 28,154.84 × 11,449.23
  4. Step 4: Simplify right side
    20,401.16x = 322,351,181.53
  5. Step 5: Solve for x
    x = 322,351,181.53/20,401.16
  6. Step 6: Final answer
    x = 15,800.63

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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.