Home / 20,394.42-28,144.24-11,321.16

Finding the Fourth Proportional to 20,394.42, 28,144.24 and 11,321.16

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Solution

The fourth proportional to 20,394.42, 28,144.24 and 11,321.16 is: 15,623.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,394.42 : 28,144.24 = 11,321.16 : x
  2. Step 2: Convert to fraction form
    20,394.42/28,144.24 = 11,321.16/x
  3. Step 3: Cross multiply
    20,394.42x = 28,144.24 × 11,321.16
  4. Step 4: Simplify right side
    20,394.42x = 318,625,444.12
  5. Step 5: Solve for x
    x = 318,625,444.12/20,394.42
  6. Step 6: Final answer
    x = 15,623.17

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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.