Home / 12,787.08-19,174.11-5,855.64

Finding the Fourth Proportional to 12,787.08, 19,174.11 and 5,855.64

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Solution

The fourth proportional to 12,787.08, 19,174.11 and 5,855.64 is: 8,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.08 : 19,174.11 = 5,855.64 : x
  2. Step 2: Convert to fraction form
    12,787.08/19,174.11 = 5,855.64/x
  3. Step 3: Cross multiply
    12,787.08x = 19,174.11 × 5,855.64
  4. Step 4: Simplify right side
    12,787.08x = 112,276,685.48
  5. Step 5: Solve for x
    x = 112,276,685.48/12,787.08
  6. Step 6: Final answer
    x = 8,780.48

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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.