Home / 20,304.35-28,018.85-11,229.18

Finding the Fourth Proportional to 20,304.35, 28,018.85 and 11,229.18

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Solution

The fourth proportional to 20,304.35, 28,018.85 and 11,229.18 is: 15,495.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.35 : 28,018.85 = 11,229.18 : x
  2. Step 2: Convert to fraction form
    20,304.35/28,018.85 = 11,229.18/x
  3. Step 3: Cross multiply
    20,304.35x = 28,018.85 × 11,229.18
  4. Step 4: Simplify right side
    20,304.35x = 314,628,513.80
  5. Step 5: Solve for x
    x = 314,628,513.80/20,304.35
  6. Step 6: Final answer
    x = 15,495.62

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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.