Home / 13,106.25-19,641.86-4,778.44

Finding the Fourth Proportional to 13,106.25, 19,641.86 and 4,778.44

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Solution

The fourth proportional to 13,106.25, 19,641.86 and 4,778.44 is: 7,161.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.25 : 19,641.86 = 4,778.44 : x
  2. Step 2: Convert to fraction form
    13,106.25/19,641.86 = 4,778.44/x
  3. Step 3: Cross multiply
    13,106.25x = 19,641.86 × 4,778.44
  4. Step 4: Simplify right side
    13,106.25x = 93,857,425.61
  5. Step 5: Solve for x
    x = 93,857,425.61/13,106.25
  6. Step 6: Final answer
    x = 7,161.28

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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.