Home / 20,348.24-28,080.24-11,395.67

Finding the Fourth Proportional to 20,348.24, 28,080.24 and 11,395.67

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Solution

The fourth proportional to 20,348.24, 28,080.24 and 11,395.67 is: 15,725.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.24 : 28,080.24 = 11,395.67 : x
  2. Step 2: Convert to fraction form
    20,348.24/28,080.24 = 11,395.67/x
  3. Step 3: Cross multiply
    20,348.24x = 28,080.24 × 11,395.67
  4. Step 4: Simplify right side
    20,348.24x = 319,992,965.43
  5. Step 5: Solve for x
    x = 319,992,965.43/20,348.24
  6. Step 6: Final answer
    x = 15,725.83

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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.