Home / 19,881.58-29,822.38-5,090.54

Finding the Fourth Proportional to 19,881.58, 29,822.38 and 5,090.54

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Solution

The fourth proportional to 19,881.58, 29,822.38 and 5,090.54 is: 7,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.58 : 29,822.38 = 5,090.54 : x
  2. Step 2: Convert to fraction form
    19,881.58/29,822.38 = 5,090.54/x
  3. Step 3: Cross multiply
    19,881.58x = 29,822.38 × 5,090.54
  4. Step 4: Simplify right side
    19,881.58x = 151,812,018.29
  5. Step 5: Solve for x
    x = 151,812,018.29/19,881.58
  6. Step 6: Final answer
    x = 7,635.81

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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.