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Finding the Fourth Proportional to 18,053.76, 27,078.13 and 5,574.20

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Solution

The fourth proportional to 18,053.76, 27,078.13 and 5,574.20 is: 8,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,053.76 : 27,078.13 = 5,574.20 : x
  2. Step 2: Convert to fraction form
    18,053.76/27,078.13 = 5,574.20/x
  3. Step 3: Cross multiply
    18,053.76x = 27,078.13 × 5,574.20
  4. Step 4: Simplify right side
    18,053.76x = 150,938,912.25
  5. Step 5: Solve for x
    x = 150,938,912.25/18,053.76
  6. Step 6: Final answer
    x = 8,360.53

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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.