Home / 27,720.20-41,580.30-7,999.40

Finding the Fourth Proportional to 27,720.20, 41,580.30 and 7,999.40

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Solution

The fourth proportional to 27,720.20, 41,580.30 and 7,999.40 is: 11,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.20 : 41,580.30 = 7,999.40 : x
  2. Step 2: Convert to fraction form
    27,720.20/41,580.30 = 7,999.40/x
  3. Step 3: Cross multiply
    27,720.20x = 41,580.30 × 7,999.40
  4. Step 4: Simplify right side
    27,720.20x = 332,617,451.82
  5. Step 5: Solve for x
    x = 332,617,451.82/27,720.20
  6. Step 6: Final answer
    x = 11,999.10

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1.5x scale

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.