Home / 27,790.86-38,351.36-15,215.60

Finding the Fourth Proportional to 27,790.86, 38,351.36 and 15,215.60

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Solution

The fourth proportional to 27,790.86, 38,351.36 and 15,215.60 is: 20,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,790.86 : 38,351.36 = 15,215.60 : x
  2. Step 2: Convert to fraction form
    27,790.86/38,351.36 = 15,215.60/x
  3. Step 3: Cross multiply
    27,790.86x = 38,351.36 × 15,215.60
  4. Step 4: Simplify right side
    27,790.86x = 583,538,953.22
  5. Step 5: Solve for x
    x = 583,538,953.22/27,790.86
  6. Step 6: Final answer
    x = 20,997.51

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