Home / 15,819.24-21,829.86-8,649.02

Finding the Fourth Proportional to 15,819.24, 21,829.86 and 8,649.02

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Solution

The fourth proportional to 15,819.24, 21,829.86 and 8,649.02 is: 11,935.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.24 : 21,829.86 = 8,649.02 : x
  2. Step 2: Convert to fraction form
    15,819.24/21,829.86 = 8,649.02/x
  3. Step 3: Cross multiply
    15,819.24x = 21,829.86 × 8,649.02
  4. Step 4: Simplify right side
    15,819.24x = 188,806,786.59
  5. Step 5: Solve for x
    x = 188,806,786.59/15,819.24
  6. Step 6: Final answer
    x = 11,935.26

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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.