Home / 25,430.49-38,131.97-20,199.11

Finding the Fourth Proportional to 25,430.49, 38,131.97 and 20,199.11

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Solution

The fourth proportional to 25,430.49, 38,131.97 and 20,199.11 is: 30,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,430.49 : 38,131.97 = 20,199.11 : x
  2. Step 2: Convert to fraction form
    25,430.49/38,131.97 = 20,199.11/x
  3. Step 3: Cross multiply
    25,430.49x = 38,131.97 × 20,199.11
  4. Step 4: Simplify right side
    25,430.49x = 770,231,564.89
  5. Step 5: Solve for x
    x = 770,231,564.89/25,430.49
  6. Step 6: Final answer
    x = 30,287.72

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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.