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Finding the Fourth Proportional to 28,179.92, 38,888.34 and 15,259.34

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Solution

The fourth proportional to 28,179.92, 38,888.34 and 15,259.34 is: 21,057.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.92 : 38,888.34 = 15,259.34 : x
  2. Step 2: Convert to fraction form
    28,179.92/38,888.34 = 15,259.34/x
  3. Step 3: Cross multiply
    28,179.92x = 38,888.34 × 15,259.34
  4. Step 4: Simplify right side
    28,179.92x = 593,410,402.10
  5. Step 5: Solve for x
    x = 593,410,402.10/28,179.92
  6. Step 6: Final answer
    x = 21,057.92

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