Home / 21,163.02-31,751.10-8,684.05

Finding the Fourth Proportional to 21,163.02, 31,751.10 and 8,684.05

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Solution

The fourth proportional to 21,163.02, 31,751.10 and 8,684.05 is: 13,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.02 : 31,751.10 = 8,684.05 : x
  2. Step 2: Convert to fraction form
    21,163.02/31,751.10 = 8,684.05/x
  3. Step 3: Cross multiply
    21,163.02x = 31,751.10 × 8,684.05
  4. Step 4: Simplify right side
    21,163.02x = 275,728,139.96
  5. Step 5: Solve for x
    x = 275,728,139.96/21,163.02
  6. Step 6: Final answer
    x = 13,028.77

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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.