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Finding the Fourth Proportional to 19,285.39, 28,939.02 and 7,606.81

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Solution

The fourth proportional to 19,285.39, 28,939.02 and 7,606.81 is: 11,414.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,285.39 : 28,939.02 = 7,606.81 : x
  2. Step 2: Convert to fraction form
    19,285.39/28,939.02 = 7,606.81/x
  3. Step 3: Cross multiply
    19,285.39x = 28,939.02 × 7,606.81
  4. Step 4: Simplify right side
    19,285.39x = 220,133,677.16
  5. Step 5: Solve for x
    x = 220,133,677.16/19,285.39
  6. Step 6: Final answer
    x = 11,414.53

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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.