Home / 40,836.48-61,241.76-13,128

Finding the Fourth Proportional to 40,836.48, 61,241.76 and 13,128

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Solution

The fourth proportional to 40,836.48, 61,241.76 and 13,128 is: 19,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,836.48 : 61,241.76 = 13,128 : x
  2. Step 2: Convert to fraction form
    40,836.48/61,241.76 = 13,128/x
  3. Step 3: Cross multiply
    40,836.48x = 61,241.76 × 13,128
  4. Step 4: Simplify right side
    40,836.48x = 803,981,825.28
  5. Step 5: Solve for x
    x = 803,981,825.28/40,836.48
  6. Step 6: Final answer
    x = 19,687.83

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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.