Home / 18,905.73-28,357.30-7,057.18

Finding the Fourth Proportional to 18,905.73, 28,357.30 and 7,057.18

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Solution

The fourth proportional to 18,905.73, 28,357.30 and 7,057.18 is: 10,585.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.73 : 28,357.30 = 7,057.18 : x
  2. Step 2: Convert to fraction form
    18,905.73/28,357.30 = 7,057.18/x
  3. Step 3: Cross multiply
    18,905.73x = 28,357.30 × 7,057.18
  4. Step 4: Simplify right side
    18,905.73x = 200,122,570.41
  5. Step 5: Solve for x
    x = 200,122,570.41/18,905.73
  6. Step 6: Final answer
    x = 10,585.29

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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.