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Finding the Fourth Proportional to 27,365.87, 37,764.36 and 15,428.97

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Solution

The fourth proportional to 27,365.87, 37,764.36 and 15,428.97 is: 21,291.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,365.87 : 37,764.36 = 15,428.97 : x
  2. Step 2: Convert to fraction form
    27,365.87/37,764.36 = 15,428.97/x
  3. Step 3: Cross multiply
    27,365.87x = 37,764.36 × 15,428.97
  4. Step 4: Simplify right side
    27,365.87x = 582,665,177.51
  5. Step 5: Solve for x
    x = 582,665,177.51/27,365.87
  6. Step 6: Final answer
    x = 21,291.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.