Home / 19,911.57-27,478.38-10,959.54

Finding the Fourth Proportional to 19,911.57, 27,478.38 and 10,959.54

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Solution

The fourth proportional to 19,911.57, 27,478.38 and 10,959.54 is: 15,124.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.57 : 27,478.38 = 10,959.54 : x
  2. Step 2: Convert to fraction form
    19,911.57/27,478.38 = 10,959.54/x
  3. Step 3: Cross multiply
    19,911.57x = 27,478.38 × 10,959.54
  4. Step 4: Simplify right side
    19,911.57x = 301,150,404.75
  5. Step 5: Solve for x
    x = 301,150,404.75/19,911.57
  6. Step 6: Final answer
    x = 15,124.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.