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Finding the Fourth Proportional to 28,777.64, 43,170.11 and 8,001.14

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Solution

The fourth proportional to 28,777.64, 43,170.11 and 8,001.14 is: 12,002.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,777.64 : 43,170.11 = 8,001.14 : x
  2. Step 2: Convert to fraction form
    28,777.64/43,170.11 = 8,001.14/x
  3. Step 3: Cross multiply
    28,777.64x = 43,170.11 × 8,001.14
  4. Step 4: Simplify right side
    28,777.64x = 345,410,053.92
  5. Step 5: Solve for x
    x = 345,410,053.92/28,777.64
  6. Step 6: Final answer
    x = 12,002.72

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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.