Home / 27,930.36-38,544.30-15,355.56

Finding the Fourth Proportional to 27,930.36, 38,544.30 and 15,355.56

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Solution

The fourth proportional to 27,930.36, 38,544.30 and 15,355.56 is: 21,190.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,930.36 : 38,544.30 = 15,355.56 : x
  2. Step 2: Convert to fraction form
    27,930.36/38,544.30 = 15,355.56/x
  3. Step 3: Cross multiply
    27,930.36x = 38,544.30 × 15,355.56
  4. Step 4: Simplify right side
    27,930.36x = 591,869,311.31
  5. Step 5: Solve for x
    x = 591,869,311.31/27,930.36
  6. Step 6: Final answer
    x = 21,190.89

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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.