Home / 20,086.58-30,131.29-5,295.38

Finding the Fourth Proportional to 20,086.58, 30,131.29 and 5,295.38

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Solution

The fourth proportional to 20,086.58, 30,131.29 and 5,295.38 is: 7,943.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.58 : 30,131.29 = 5,295.38 : x
  2. Step 2: Convert to fraction form
    20,086.58/30,131.29 = 5,295.38/x
  3. Step 3: Cross multiply
    20,086.58x = 30,131.29 × 5,295.38
  4. Step 4: Simplify right side
    20,086.58x = 159,556,486.40
  5. Step 5: Solve for x
    x = 159,556,486.40/20,086.58
  6. Step 6: Final answer
    x = 7,943.44

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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.