Home / 21,269.35-29,353.40-12,317

Finding the Fourth Proportional to 21,269.35, 29,353.40 and 12,317

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Solution

The fourth proportional to 21,269.35, 29,353.40 and 12,317 is: 16,998.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.35 : 29,353.40 = 12,317 : x
  2. Step 2: Convert to fraction form
    21,269.35/29,353.40 = 12,317/x
  3. Step 3: Cross multiply
    21,269.35x = 29,353.40 × 12,317
  4. Step 4: Simplify right side
    21,269.35x = 361,545,766.22
  5. Step 5: Solve for x
    x = 361,545,766.22/21,269.35
  6. Step 6: Final answer
    x = 16,998.44

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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.