Home / 27,930.66-38,544.57-15,355.50

Finding the Fourth Proportional to 27,930.66, 38,544.57 and 15,355.50

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Solution

The fourth proportional to 27,930.66, 38,544.57 and 15,355.50 is: 21,190.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,930.66 : 38,544.57 = 15,355.50 : x
  2. Step 2: Convert to fraction form
    27,930.66/38,544.57 = 15,355.50/x
  3. Step 3: Cross multiply
    27,930.66x = 38,544.57 × 15,355.50
  4. Step 4: Simplify right side
    27,930.66x = 591,871,144.64
  5. Step 5: Solve for x
    x = 591,871,144.64/27,930.66
  6. Step 6: Final answer
    x = 21,190.73

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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.