Home / 20,802.74-31,216.44-7,664.33

Finding the Fourth Proportional to 20,802.74, 31,216.44 and 7,664.33

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Solution

The fourth proportional to 20,802.74, 31,216.44 and 7,664.33 is: 11,501.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.74 : 31,216.44 = 7,664.33 : x
  2. Step 2: Convert to fraction form
    20,802.74/31,216.44 = 7,664.33/x
  3. Step 3: Cross multiply
    20,802.74x = 31,216.44 × 7,664.33
  4. Step 4: Simplify right side
    20,802.74x = 239,253,097.59
  5. Step 5: Solve for x
    x = 239,253,097.59/20,802.74
  6. Step 6: Final answer
    x = 11,501.04

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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.