Home / 13,269.69-19,913.58-5,478.44

Finding the Fourth Proportional to 13,269.69, 19,913.58 and 5,478.44

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Solution

The fourth proportional to 13,269.69, 19,913.58 and 5,478.44 is: 8,221.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.69 : 19,913.58 = 5,478.44 : x
  2. Step 2: Convert to fraction form
    13,269.69/19,913.58 = 5,478.44/x
  3. Step 3: Cross multiply
    13,269.69x = 19,913.58 × 5,478.44
  4. Step 4: Simplify right side
    13,269.69x = 109,095,253.65
  5. Step 5: Solve for x
    x = 109,095,253.65/13,269.69
  6. Step 6: Final answer
    x = 8,221.39

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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.