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Finding the Fourth Proportional to 28,927.21, 43,390.77 and 8,150.71

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Solution

The fourth proportional to 28,927.21, 43,390.77 and 8,150.71 is: 12,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,927.21 : 43,390.77 = 8,150.71 : x
  2. Step 2: Convert to fraction form
    28,927.21/43,390.77 = 8,150.71/x
  3. Step 3: Cross multiply
    28,927.21x = 43,390.77 × 8,150.71
  4. Step 4: Simplify right side
    28,927.21x = 353,665,582.95
  5. Step 5: Solve for x
    x = 353,665,582.95/28,927.21
  6. Step 6: Final answer
    x = 12,226.05

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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.