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Finding the Fourth Proportional to 38,508, 53,141.04 and 20,844

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Solution

The fourth proportional to 38,508, 53,141.04 and 20,844 is: 28,764.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,508 : 53,141.04 = 20,844 : x
  2. Step 2: Convert to fraction form
    38,508/53,141.04 = 20,844/x
  3. Step 3: Cross multiply
    38,508x = 53,141.04 × 20,844
  4. Step 4: Simplify right side
    38,508x = 1,107,671,837.76
  5. Step 5: Solve for x
    x = 1,107,671,837.76/38,508
  6. Step 6: Final answer
    x = 28,764.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.