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Finding the Fourth Proportional to 28,989.70, 43,487.28 and 9,263.57

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Solution

The fourth proportional to 28,989.70, 43,487.28 and 9,263.57 is: 13,896.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.70 : 43,487.28 = 9,263.57 : x
  2. Step 2: Convert to fraction form
    28,989.70/43,487.28 = 9,263.57/x
  3. Step 3: Cross multiply
    28,989.70x = 43,487.28 × 9,263.57
  4. Step 4: Simplify right side
    28,989.70x = 402,847,244.95
  5. Step 5: Solve for x
    x = 402,847,244.95/28,989.70
  6. Step 6: Final answer
    x = 13,896.22

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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.