Home / 15,084.40-20,817.74-8,371.43

Finding the Fourth Proportional to 15,084.40, 20,817.74 and 8,371.43

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Solution

The fourth proportional to 15,084.40, 20,817.74 and 8,371.43 is: 11,553.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.40 : 20,817.74 = 8,371.43 : x
  2. Step 2: Convert to fraction form
    15,084.40/20,817.74 = 8,371.43/x
  3. Step 3: Cross multiply
    15,084.40x = 20,817.74 × 8,371.43
  4. Step 4: Simplify right side
    15,084.40x = 174,274,253.17
  5. Step 5: Solve for x
    x = 174,274,253.17/15,084.40
  6. Step 6: Final answer
    x = 11,553.28

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1.5x scale

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.