Home / 18,131.90-25,021.35-10,174.55

Finding the Fourth Proportional to 18,131.90, 25,021.35 and 10,174.55

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Solution

The fourth proportional to 18,131.90, 25,021.35 and 10,174.55 is: 14,040.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.90 : 25,021.35 = 10,174.55 : x
  2. Step 2: Convert to fraction form
    18,131.90/25,021.35 = 10,174.55/x
  3. Step 3: Cross multiply
    18,131.90x = 25,021.35 × 10,174.55
  4. Step 4: Simplify right side
    18,131.90x = 254,580,851.54
  5. Step 5: Solve for x
    x = 254,580,851.54/18,131.90
  6. Step 6: Final answer
    x = 14,040.50

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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.