Home / 20,552.40-28,362.24-11,120.96

Finding the Fourth Proportional to 20,552.40, 28,362.24 and 11,120.96

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Solution

The fourth proportional to 20,552.40, 28,362.24 and 11,120.96 is: 15,346.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.40 : 28,362.24 = 11,120.96 : x
  2. Step 2: Convert to fraction form
    20,552.40/28,362.24 = 11,120.96/x
  3. Step 3: Cross multiply
    20,552.40x = 28,362.24 × 11,120.96
  4. Step 4: Simplify right side
    20,552.40x = 315,415,336.55
  5. Step 5: Solve for x
    x = 315,415,336.55/20,552.40
  6. Step 6: Final answer
    x = 15,346.89

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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.