Home / 13,149.74-19,721.68-3,787.76

Finding the Fourth Proportional to 13,149.74, 19,721.68 and 3,787.76

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Solution

The fourth proportional to 13,149.74, 19,721.68 and 3,787.76 is: 5,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.74 : 19,721.68 = 3,787.76 : x
  2. Step 2: Convert to fraction form
    13,149.74/19,721.68 = 3,787.76/x
  3. Step 3: Cross multiply
    13,149.74x = 19,721.68 × 3,787.76
  4. Step 4: Simplify right side
    13,149.74x = 74,701,030.47
  5. Step 5: Solve for x
    x = 74,701,030.47/13,149.74
  6. Step 6: Final answer
    x = 5,680.80

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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.