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Finding the Fourth Proportional to 28,373.44, 42,560.16 and 8,651.56

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Solution

The fourth proportional to 28,373.44, 42,560.16 and 8,651.56 is: 12,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,373.44 : 42,560.16 = 8,651.56 : x
  2. Step 2: Convert to fraction form
    28,373.44/42,560.16 = 8,651.56/x
  3. Step 3: Cross multiply
    28,373.44x = 42,560.16 × 8,651.56
  4. Step 4: Simplify right side
    28,373.44x = 368,211,777.85
  5. Step 5: Solve for x
    x = 368,211,777.85/28,373.44
  6. Step 6: Final answer
    x = 12,977.34

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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.