Home / 21,254.28-31,874.94-17,084.40

Finding the Fourth Proportional to 21,254.28, 31,874.94 and 17,084.40

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Solution

The fourth proportional to 21,254.28, 31,874.94 and 17,084.40 is: 25,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.28 : 31,874.94 = 17,084.40 : x
  2. Step 2: Convert to fraction form
    21,254.28/31,874.94 = 17,084.40/x
  3. Step 3: Cross multiply
    21,254.28x = 31,874.94 × 17,084.40
  4. Step 4: Simplify right side
    21,254.28x = 544,564,224.94
  5. Step 5: Solve for x
    x = 544,564,224.94/21,254.28
  6. Step 6: Final answer
    x = 25,621.39

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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.