Home / 25,787.72-38,674.38-9,145.64

Finding the Fourth Proportional to 25,787.72, 38,674.38 and 9,145.64

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Solution

The fourth proportional to 25,787.72, 38,674.38 and 9,145.64 is: 13,715.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.72 : 38,674.38 = 9,145.64 : x
  2. Step 2: Convert to fraction form
    25,787.72/38,674.38 = 9,145.64/x
  3. Step 3: Cross multiply
    25,787.72x = 38,674.38 × 9,145.64
  4. Step 4: Simplify right side
    25,787.72x = 353,701,956.70
  5. Step 5: Solve for x
    x = 353,701,956.70/25,787.72
  6. Step 6: Final answer
    x = 13,715.91

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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.