Home / 19,881.81-29,822.67-5,090.73

Finding the Fourth Proportional to 19,881.81, 29,822.67 and 5,090.73

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Solution

The fourth proportional to 19,881.81, 29,822.67 and 5,090.73 is: 7,636.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.81 : 29,822.67 = 5,090.73 : x
  2. Step 2: Convert to fraction form
    19,881.81/29,822.67 = 5,090.73/x
  3. Step 3: Cross multiply
    19,881.81x = 29,822.67 × 5,090.73
  4. Step 4: Simplify right side
    19,881.81x = 151,819,160.85
  5. Step 5: Solve for x
    x = 151,819,160.85/19,881.81
  6. Step 6: Final answer
    x = 7,636.08

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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.