Home / 20,826.80-28,740.48-11,395.52

Finding the Fourth Proportional to 20,826.80, 28,740.48 and 11,395.52

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Solution

The fourth proportional to 20,826.80, 28,740.48 and 11,395.52 is: 15,725.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.80 : 28,740.48 = 11,395.52 : x
  2. Step 2: Convert to fraction form
    20,826.80/28,740.48 = 11,395.52/x
  3. Step 3: Cross multiply
    20,826.80x = 28,740.48 × 11,395.52
  4. Step 4: Simplify right side
    20,826.80x = 327,512,714.65
  5. Step 5: Solve for x
    x = 327,512,714.65/20,826.80
  6. Step 6: Final answer
    x = 15,725.54

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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.