Home / 12,787.88-19,176.32-4,465.40

Finding the Fourth Proportional to 12,787.88, 19,176.32 and 4,465.40

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Solution

The fourth proportional to 12,787.88, 19,176.32 and 4,465.40 is: 6,696.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.88 : 19,176.32 = 4,465.40 : x
  2. Step 2: Convert to fraction form
    12,787.88/19,176.32 = 4,465.40/x
  3. Step 3: Cross multiply
    12,787.88x = 19,176.32 × 4,465.40
  4. Step 4: Simplify right side
    12,787.88x = 85,629,939.33
  5. Step 5: Solve for x
    x = 85,629,939.33/12,787.88
  6. Step 6: Final answer
    x = 6,696.18

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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.