Home / 19,578.40-29,366.94-4,787.38

Finding the Fourth Proportional to 19,578.40, 29,366.94 and 4,787.38

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Solution

The fourth proportional to 19,578.40, 29,366.94 and 4,787.38 is: 7,180.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,578.40 : 29,366.94 = 4,787.38 : x
  2. Step 2: Convert to fraction form
    19,578.40/29,366.94 = 4,787.38/x
  3. Step 3: Cross multiply
    19,578.40x = 29,366.94 × 4,787.38
  4. Step 4: Simplify right side
    19,578.40x = 140,590,701.22
  5. Step 5: Solve for x
    x = 140,590,701.22/19,578.40
  6. Step 6: Final answer
    x = 7,180.91

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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.