Home / 21,684.29-29,915.46-17,190

Finding the Fourth Proportional to 21,684.29, 29,915.46 and 17,190

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Solution

The fourth proportional to 21,684.29, 29,915.46 and 17,190 is: 23,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684.29 : 29,915.46 = 17,190 : x
  2. Step 2: Convert to fraction form
    21,684.29/29,915.46 = 17,190/x
  3. Step 3: Cross multiply
    21,684.29x = 29,915.46 × 17,190
  4. Step 4: Simplify right side
    21,684.29x = 514,246,757.40
  5. Step 5: Solve for x
    x = 514,246,757.40/21,684.29
  6. Step 6: Final answer
    x = 23,715.18

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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.