Home / 21,983.28-30,310.20-15,274.48

Finding the Fourth Proportional to 21,983.28, 30,310.20 and 15,274.48

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Solution

The fourth proportional to 21,983.28, 30,310.20 and 15,274.48 is: 21,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.28 : 30,310.20 = 15,274.48 : x
  2. Step 2: Convert to fraction form
    21,983.28/30,310.20 = 15,274.48/x
  3. Step 3: Cross multiply
    21,983.28x = 30,310.20 × 15,274.48
  4. Step 4: Simplify right side
    21,983.28x = 462,972,543.70
  5. Step 5: Solve for x
    x = 462,972,543.70/21,983.28
  6. Step 6: Final answer
    x = 21,060.21

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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.