Home / 18,905.31-28,353.71-5,575.44

Finding the Fourth Proportional to 18,905.31, 28,353.71 and 5,575.44

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Solution

The fourth proportional to 18,905.31, 28,353.71 and 5,575.44 is: 8,361.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.31 : 28,353.71 = 5,575.44 : x
  2. Step 2: Convert to fraction form
    18,905.31/28,353.71 = 5,575.44/x
  3. Step 3: Cross multiply
    18,905.31x = 28,353.71 × 5,575.44
  4. Step 4: Simplify right side
    18,905.31x = 158,084,529.15
  5. Step 5: Solve for x
    x = 158,084,529.15/18,905.31
  6. Step 6: Final answer
    x = 8,361.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.