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Finding the Fourth Proportional to 28,325, 39,088.50 and 15,749.48

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Solution

The fourth proportional to 28,325, 39,088.50 and 15,749.48 is: 21,734.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325 : 39,088.50 = 15,749.48 : x
  2. Step 2: Convert to fraction form
    28,325/39,088.50 = 15,749.48/x
  3. Step 3: Cross multiply
    28,325x = 39,088.50 × 15,749.48
  4. Step 4: Simplify right side
    28,325x = 615,623,548.98
  5. Step 5: Solve for x
    x = 615,623,548.98/28,325
  6. Step 6: Final answer
    x = 21,734.28

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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.