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Finding the Fourth Proportional to 38,620, 57,935.76 and 14,001.76

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Solution

The fourth proportional to 38,620, 57,935.76 and 14,001.76 is: 21,004.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,620 : 57,935.76 = 14,001.76 : x
  2. Step 2: Convert to fraction form
    38,620/57,935.76 = 14,001.76/x
  3. Step 3: Cross multiply
    38,620x = 57,935.76 × 14,001.76
  4. Step 4: Simplify right side
    38,620x = 811,202,606.94
  5. Step 5: Solve for x
    x = 811,202,606.94/38,620
  6. Step 6: Final answer
    x = 21,004.73

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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.