Home / 18,005.31-27,021.27-8,650.75

Finding the Fourth Proportional to 18,005.31, 27,021.27 and 8,650.75

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Solution

The fourth proportional to 18,005.31, 27,021.27 and 8,650.75 is: 12,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.31 : 27,021.27 = 8,650.75 : x
  2. Step 2: Convert to fraction form
    18,005.31/27,021.27 = 8,650.75/x
  3. Step 3: Cross multiply
    18,005.31x = 27,021.27 × 8,650.75
  4. Step 4: Simplify right side
    18,005.31x = 233,754,242.67
  5. Step 5: Solve for x
    x = 233,754,242.67/18,005.31
  6. Step 6: Final answer
    x = 12,982.51

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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.