Home / 20,077.88-30,119.25-18,972.23

Finding the Fourth Proportional to 20,077.88, 30,119.25 and 18,972.23

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Solution

The fourth proportional to 20,077.88, 30,119.25 and 18,972.23 is: 28,460.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.88 : 30,119.25 = 18,972.23 : x
  2. Step 2: Convert to fraction form
    20,077.88/30,119.25 = 18,972.23/x
  3. Step 3: Cross multiply
    20,077.88x = 30,119.25 × 18,972.23
  4. Step 4: Simplify right side
    20,077.88x = 571,429,338.43
  5. Step 5: Solve for x
    x = 571,429,338.43/20,077.88
  6. Step 6: Final answer
    x = 28,460.64

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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.