Home / 21,161.40-31,743.41-5,579.03

Finding the Fourth Proportional to 21,161.40, 31,743.41 and 5,579.03

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Solution

The fourth proportional to 21,161.40, 31,743.41 and 5,579.03 is: 8,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.40 : 31,743.41 = 5,579.03 : x
  2. Step 2: Convert to fraction form
    21,161.40/31,743.41 = 5,579.03/x
  3. Step 3: Cross multiply
    21,161.40x = 31,743.41 × 5,579.03
  4. Step 4: Simplify right side
    21,161.40x = 177,097,250.08
  5. Step 5: Solve for x
    x = 177,097,250.08/21,161.40
  6. Step 6: Final answer
    x = 8,368.88

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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.