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Finding the Fourth Proportional to 35,103.92, 48,439.08 and 20,954

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Solution

The fourth proportional to 35,103.92, 48,439.08 and 20,954 is: 28,913.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,103.92 : 48,439.08 = 20,954 : x
  2. Step 2: Convert to fraction form
    35,103.92/48,439.08 = 20,954/x
  3. Step 3: Cross multiply
    35,103.92x = 48,439.08 × 20,954
  4. Step 4: Simplify right side
    35,103.92x = 1,014,992,482.32
  5. Step 5: Solve for x
    x = 1,014,992,482.32/35,103.92
  6. Step 6: Final answer
    x = 28,913.94

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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.