Home / 20,156.26-30,237.52-10,290.20

Finding the Fourth Proportional to 20,156.26, 30,237.52 and 10,290.20

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Solution

The fourth proportional to 20,156.26, 30,237.52 and 10,290.20 is: 15,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.26 : 30,237.52 = 10,290.20 : x
  2. Step 2: Convert to fraction form
    20,156.26/30,237.52 = 10,290.20/x
  3. Step 3: Cross multiply
    20,156.26x = 30,237.52 × 10,290.20
  4. Step 4: Simplify right side
    20,156.26x = 311,150,128.30
  5. Step 5: Solve for x
    x = 311,150,128.30/20,156.26
  6. Step 6: Final answer
    x = 15,436.90

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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.