Home / 14,079.28-21,120.06-3,691

Finding the Fourth Proportional to 14,079.28, 21,120.06 and 3,691

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Solution

The fourth proportional to 14,079.28, 21,120.06 and 3,691 is: 5,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.28 : 21,120.06 = 3,691 : x
  2. Step 2: Convert to fraction form
    14,079.28/21,120.06 = 3,691/x
  3. Step 3: Cross multiply
    14,079.28x = 21,120.06 × 3,691
  4. Step 4: Simplify right side
    14,079.28x = 77,954,141.46
  5. Step 5: Solve for x
    x = 77,954,141.46/14,079.28
  6. Step 6: Final answer
    x = 5,536.80

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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.