Home / 18,519.60-25,556.86-10,021.54

Finding the Fourth Proportional to 18,519.60, 25,556.86 and 10,021.54

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Solution

The fourth proportional to 18,519.60, 25,556.86 and 10,021.54 is: 13,829.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.60 : 25,556.86 = 10,021.54 : x
  2. Step 2: Convert to fraction form
    18,519.60/25,556.86 = 10,021.54/x
  3. Step 3: Cross multiply
    18,519.60x = 25,556.86 × 10,021.54
  4. Step 4: Simplify right side
    18,519.60x = 256,119,063.13
  5. Step 5: Solve for x
    x = 256,119,063.13/18,519.60
  6. Step 6: Final answer
    x = 13,829.62

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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.