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Finding the Fourth Proportional to 28,841, 39,800.64 and 15,593

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Solution

The fourth proportional to 28,841, 39,800.64 and 15,593 is: 21,518.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,841 : 39,800.64 = 15,593 : x
  2. Step 2: Convert to fraction form
    28,841/39,800.64 = 15,593/x
  3. Step 3: Cross multiply
    28,841x = 39,800.64 × 15,593
  4. Step 4: Simplify right side
    28,841x = 620,611,379.52
  5. Step 5: Solve for x
    x = 620,611,379.52/28,841
  6. Step 6: Final answer
    x = 21,518.37

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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.