Home / 20,031.26-27,635.87-15,433.55

Finding the Fourth Proportional to 20,031.26, 27,635.87 and 15,433.55

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Solution

The fourth proportional to 20,031.26, 27,635.87 and 15,433.55 is: 21,292.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.26 : 27,635.87 = 15,433.55 : x
  2. Step 2: Convert to fraction form
    20,031.26/27,635.87 = 15,433.55/x
  3. Step 3: Cross multiply
    20,031.26x = 27,635.87 × 15,433.55
  4. Step 4: Simplify right side
    20,031.26x = 426,519,504.27
  5. Step 5: Solve for x
    x = 426,519,504.27/20,031.26
  6. Step 6: Final answer
    x = 21,292.69

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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.