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Finding the Fourth Proportional to 25,959.36, 38,906.89 and 12,621.44

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Solution

The fourth proportional to 25,959.36, 38,906.89 and 12,621.44 is: 18,916.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,959.36 : 38,906.89 = 12,621.44 : x
  2. Step 2: Convert to fraction form
    25,959.36/38,906.89 = 12,621.44/x
  3. Step 3: Cross multiply
    25,959.36x = 38,906.89 × 12,621.44
  4. Step 4: Simplify right side
    25,959.36x = 491,060,802.00
  5. Step 5: Solve for x
    x = 491,060,802.00/25,959.36
  6. Step 6: Final answer
    x = 18,916.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.