Home / 21,294.18-29,379.46-12,339.96

Finding the Fourth Proportional to 21,294.18, 29,379.46 and 12,339.96

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Solution

The fourth proportional to 21,294.18, 29,379.46 and 12,339.96 is: 17,025.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.18 : 29,379.46 = 12,339.96 : x
  2. Step 2: Convert to fraction form
    21,294.18/29,379.46 = 12,339.96/x
  3. Step 3: Cross multiply
    21,294.18x = 29,379.46 × 12,339.96
  4. Step 4: Simplify right side
    21,294.18x = 362,541,361.22
  5. Step 5: Solve for x
    x = 362,541,361.22/21,294.18
  6. Step 6: Final answer
    x = 17,025.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.