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Finding the Fourth Proportional to 35,008.89, 48,321 and 20,859

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Solution

The fourth proportional to 35,008.89, 48,321 and 20,859 is: 28,790.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,008.89 : 48,321 = 20,859 : x
  2. Step 2: Convert to fraction form
    35,008.89/48,321 = 20,859/x
  3. Step 3: Cross multiply
    35,008.89x = 48,321 × 20,859
  4. Step 4: Simplify right side
    35,008.89x = 1,007,927,739
  5. Step 5: Solve for x
    x = 1,007,927,739/35,008.89
  6. Step 6: Final answer
    x = 28,790.62

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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.