Home / 20,398.35-28,150.16-11,446.50

Finding the Fourth Proportional to 20,398.35, 28,150.16 and 11,446.50

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Solution

The fourth proportional to 20,398.35, 28,150.16 and 11,446.50 is: 15,796.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.35 : 28,150.16 = 11,446.50 : x
  2. Step 2: Convert to fraction form
    20,398.35/28,150.16 = 11,446.50/x
  3. Step 3: Cross multiply
    20,398.35x = 28,150.16 × 11,446.50
  4. Step 4: Simplify right side
    20,398.35x = 322,220,806.44
  5. Step 5: Solve for x
    x = 322,220,806.44/20,398.35
  6. Step 6: Final answer
    x = 15,796.42

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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.