Home / 21,427.10-32,129.12-6,629.66

Finding the Fourth Proportional to 21,427.10, 32,129.12 and 6,629.66

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Solution

The fourth proportional to 21,427.10, 32,129.12 and 6,629.66 is: 9,940.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.10 : 32,129.12 = 6,629.66 : x
  2. Step 2: Convert to fraction form
    21,427.10/32,129.12 = 6,629.66/x
  3. Step 3: Cross multiply
    21,427.10x = 32,129.12 × 6,629.66
  4. Step 4: Simplify right side
    21,427.10x = 213,005,141.70
  5. Step 5: Solve for x
    x = 213,005,141.70/21,427.10
  6. Step 6: Final answer
    x = 9,940.92

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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.