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Finding the Fourth Proportional to 25,940.72, 38,919.28 and 9,300.32

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Solution

The fourth proportional to 25,940.72, 38,919.28 and 9,300.32 is: 13,953.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,940.72 : 38,919.28 = 9,300.32 : x
  2. Step 2: Convert to fraction form
    25,940.72/38,919.28 = 9,300.32/x
  3. Step 3: Cross multiply
    25,940.72x = 38,919.28 × 9,300.32
  4. Step 4: Simplify right side
    25,940.72x = 361,961,758.17
  5. Step 5: Solve for x
    x = 361,961,758.17/25,940.72
  6. Step 6: Final answer
    x = 13,953.42

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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.