Home / 27,999.30-42,003.53-8,279.85

Finding the Fourth Proportional to 27,999.30, 42,003.53 and 8,279.85

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Solution

The fourth proportional to 27,999.30, 42,003.53 and 8,279.85 is: 12,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.30 : 42,003.53 = 8,279.85 : x
  2. Step 2: Convert to fraction form
    27,999.30/42,003.53 = 8,279.85/x
  3. Step 3: Cross multiply
    27,999.30x = 42,003.53 × 8,279.85
  4. Step 4: Simplify right side
    27,999.30x = 347,783,075.03
  5. Step 5: Solve for x
    x = 347,783,075.03/27,999.30
  6. Step 6: Final answer
    x = 12,421.13

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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.