Home / 18,519.41-25,556.74-10,021.50

Finding the Fourth Proportional to 18,519.41, 25,556.74 and 10,021.50

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Solution

The fourth proportional to 18,519.41, 25,556.74 and 10,021.50 is: 13,829.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.41 : 25,556.74 = 10,021.50 : x
  2. Step 2: Convert to fraction form
    18,519.41/25,556.74 = 10,021.50/x
  3. Step 3: Cross multiply
    18,519.41x = 25,556.74 × 10,021.50
  4. Step 4: Simplify right side
    18,519.41x = 256,116,869.91
  5. Step 5: Solve for x
    x = 256,116,869.91/18,519.41
  6. Step 6: Final answer
    x = 13,829.65

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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.