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Finding the Fourth Proportional to 28,903.66, 43,355.49 and 8,127.16

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Solution

The fourth proportional to 28,903.66, 43,355.49 and 8,127.16 is: 12,190.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.66 : 43,355.49 = 8,127.16 : x
  2. Step 2: Convert to fraction form
    28,903.66/43,355.49 = 8,127.16/x
  3. Step 3: Cross multiply
    28,903.66x = 43,355.49 × 8,127.16
  4. Step 4: Simplify right side
    28,903.66x = 352,356,746.70
  5. Step 5: Solve for x
    x = 352,356,746.70/28,903.66
  6. Step 6: Final answer
    x = 12,190.73

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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.