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Finding the Fourth Proportional to 8,990.06, 13,512 and 7,440.02

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Solution

The fourth proportional to 8,990.06, 13,512 and 7,440.02 is: 11,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.06 : 13,512 = 7,440.02 : x
  2. Step 2: Convert to fraction form
    8,990.06/13,512 = 7,440.02/x
  3. Step 3: Cross multiply
    8,990.06x = 13,512 × 7,440.02
  4. Step 4: Simplify right side
    8,990.06x = 100,529,550.24
  5. Step 5: Solve for x
    x = 100,529,550.24/8,990.06
  6. Step 6: Final answer
    x = 11,182.30

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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.