Home / 13,104.78-19,640.76-10,320.45

Finding the Fourth Proportional to 13,104.78, 19,640.76 and 10,320.45

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Solution

The fourth proportional to 13,104.78, 19,640.76 and 10,320.45 is: 15,467.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.78 : 19,640.76 = 10,320.45 : x
  2. Step 2: Convert to fraction form
    13,104.78/19,640.76 = 10,320.45/x
  3. Step 3: Cross multiply
    13,104.78x = 19,640.76 × 10,320.45
  4. Step 4: Simplify right side
    13,104.78x = 202,701,481.54
  5. Step 5: Solve for x
    x = 202,701,481.54/13,104.78
  6. Step 6: Final answer
    x = 15,467.75

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1.5x scale

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.