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Finding the Fourth Proportional to 25,908.72, 38,863.32 and 7,440.72

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Solution

The fourth proportional to 25,908.72, 38,863.32 and 7,440.72 is: 11,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,908.72 : 38,863.32 = 7,440.72 : x
  2. Step 2: Convert to fraction form
    25,908.72/38,863.32 = 7,440.72/x
  3. Step 3: Cross multiply
    25,908.72x = 38,863.32 × 7,440.72
  4. Step 4: Simplify right side
    25,908.72x = 289,171,082.39
  5. Step 5: Solve for x
    x = 289,171,082.39/25,908.72
  6. Step 6: Final answer
    x = 11,161.15

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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.