Home / 20,837.10-28,732.28-13,274.94

Finding the Fourth Proportional to 20,837.10, 28,732.28 and 13,274.94

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Solution

The fourth proportional to 20,837.10, 28,732.28 and 13,274.94 is: 18,304.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.10 : 28,732.28 = 13,274.94 : x
  2. Step 2: Convert to fraction form
    20,837.10/28,732.28 = 13,274.94/x
  3. Step 3: Cross multiply
    20,837.10x = 28,732.28 × 13,274.94
  4. Step 4: Simplify right side
    20,837.10x = 381,419,293.06
  5. Step 5: Solve for x
    x = 381,419,293.06/20,837.10
  6. Step 6: Final answer
    x = 18,304.82

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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.