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Finding the Fourth Proportional to 28,989.87, 43,491.00 and 8,998.92

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Solution

The fourth proportional to 28,989.87, 43,491.00 and 8,998.92 is: 13,500.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.87 : 43,491.00 = 8,998.92 : x
  2. Step 2: Convert to fraction form
    28,989.87/43,491.00 = 8,998.92/x
  3. Step 3: Cross multiply
    28,989.87x = 43,491.00 × 8,998.92
  4. Step 4: Simplify right side
    28,989.87x = 391,372,160.94
  5. Step 5: Solve for x
    x = 391,372,160.94/28,989.87
  6. Step 6: Final answer
    x = 13,500.31

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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.