Home / 19,828.48-29,716.76-8,135.28

Finding the Fourth Proportional to 19,828.48, 29,716.76 and 8,135.28

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Solution

The fourth proportional to 19,828.48, 29,716.76 and 8,135.28 is: 12,192.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,828.48 : 29,716.76 = 8,135.28 : x
  2. Step 2: Convert to fraction form
    19,828.48/29,716.76 = 8,135.28/x
  3. Step 3: Cross multiply
    19,828.48x = 29,716.76 × 8,135.28
  4. Step 4: Simplify right side
    19,828.48x = 241,754,163.29
  5. Step 5: Solve for x
    x = 241,754,163.29/19,828.48
  6. Step 6: Final answer
    x = 12,192.27

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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.