Home / 18,407.30-27,621.50-7,161.15

Finding the Fourth Proportional to 18,407.30, 27,621.50 and 7,161.15

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Solution

The fourth proportional to 18,407.30, 27,621.50 and 7,161.15 is: 10,745.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.30 : 27,621.50 = 7,161.15 : x
  2. Step 2: Convert to fraction form
    18,407.30/27,621.50 = 7,161.15/x
  3. Step 3: Cross multiply
    18,407.30x = 27,621.50 × 7,161.15
  4. Step 4: Simplify right side
    18,407.30x = 197,801,772.50
  5. Step 5: Solve for x
    x = 197,801,772.50/18,407.30
  6. Step 6: Final answer
    x = 10,745.84

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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.