Home / 13,614.31-20,412.57-5,721.87

Finding the Fourth Proportional to 13,614.31, 20,412.57 and 5,721.87

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Solution

The fourth proportional to 13,614.31, 20,412.57 and 5,721.87 is: 8,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.31 : 20,412.57 = 5,721.87 : x
  2. Step 2: Convert to fraction form
    13,614.31/20,412.57 = 5,721.87/x
  3. Step 3: Cross multiply
    13,614.31x = 20,412.57 × 5,721.87
  4. Step 4: Simplify right side
    13,614.31x = 116,798,071.91
  5. Step 5: Solve for x
    x = 116,798,071.91/13,614.31
  6. Step 6: Final answer
    x = 8,579.07

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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.