Home / 20,902.77-28,845.74-11,342.70

Finding the Fourth Proportional to 20,902.77, 28,845.74 and 11,342.70

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Solution

The fourth proportional to 20,902.77, 28,845.74 and 11,342.70 is: 15,652.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.77 : 28,845.74 = 11,342.70 : x
  2. Step 2: Convert to fraction form
    20,902.77/28,845.74 = 11,342.70/x
  3. Step 3: Cross multiply
    20,902.77x = 28,845.74 × 11,342.70
  4. Step 4: Simplify right side
    20,902.77x = 327,188,374.16
  5. Step 5: Solve for x
    x = 327,188,374.16/20,902.77
  6. Step 6: Final answer
    x = 15,652.88

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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.