Home / 20,154.90-30,167.58-10,771.47

Finding the Fourth Proportional to 20,154.90, 30,167.58 and 10,771.47

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Solution

The fourth proportional to 20,154.90, 30,167.58 and 10,771.47 is: 16,122.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.90 : 30,167.58 = 10,771.47 : x
  2. Step 2: Convert to fraction form
    20,154.90/30,167.58 = 10,771.47/x
  3. Step 3: Cross multiply
    20,154.90x = 30,167.58 × 10,771.47
  4. Step 4: Simplify right side
    20,154.90x = 324,949,182.94
  5. Step 5: Solve for x
    x = 324,949,182.94/20,154.90
  6. Step 6: Final answer
    x = 16,122.59

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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.