Home / 20,532.42-28,334.70-11,100.96

Finding the Fourth Proportional to 20,532.42, 28,334.70 and 11,100.96

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Solution

The fourth proportional to 20,532.42, 28,334.70 and 11,100.96 is: 15,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.42 : 28,334.70 = 11,100.96 : x
  2. Step 2: Convert to fraction form
    20,532.42/28,334.70 = 11,100.96/x
  3. Step 3: Cross multiply
    20,532.42x = 28,334.70 × 11,100.96
  4. Step 4: Simplify right side
    20,532.42x = 314,542,371.31
  5. Step 5: Solve for x
    x = 314,542,371.31/20,532.42
  6. Step 6: Final answer
    x = 15,319.30

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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.