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Finding the Fourth Proportional to 28,932.72, 43,400.16 and 8,156.76

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Solution

The fourth proportional to 28,932.72, 43,400.16 and 8,156.76 is: 12,235.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,932.72 : 43,400.16 = 8,156.76 : x
  2. Step 2: Convert to fraction form
    28,932.72/43,400.16 = 8,156.76/x
  3. Step 3: Cross multiply
    28,932.72x = 43,400.16 × 8,156.76
  4. Step 4: Simplify right side
    28,932.72x = 354,004,689.08
  5. Step 5: Solve for x
    x = 354,004,689.08/28,932.72
  6. Step 6: Final answer
    x = 12,235.44

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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.