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Finding the Fourth Proportional to 15,999.20, 24,027.60 and 11,621.60

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Solution

The fourth proportional to 15,999.20, 24,027.60 and 11,621.60 is: 17,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.20 : 24,027.60 = 11,621.60 : x
  2. Step 2: Convert to fraction form
    15,999.20/24,027.60 = 11,621.60/x
  3. Step 3: Cross multiply
    15,999.20x = 24,027.60 × 11,621.60
  4. Step 4: Simplify right side
    15,999.20x = 279,239,156.16
  5. Step 5: Solve for x
    x = 279,239,156.16/15,999.20
  6. Step 6: Final answer
    x = 17,453.32

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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.