Home / 20,886.83-31,329.39-6,847.91

Finding the Fourth Proportional to 20,886.83, 31,329.39 and 6,847.91

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Solution

The fourth proportional to 20,886.83, 31,329.39 and 6,847.91 is: 10,271.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.83 : 31,329.39 = 6,847.91 : x
  2. Step 2: Convert to fraction form
    20,886.83/31,329.39 = 6,847.91/x
  3. Step 3: Cross multiply
    20,886.83x = 31,329.39 × 6,847.91
  4. Step 4: Simplify right side
    20,886.83x = 214,540,686.43
  5. Step 5: Solve for x
    x = 214,540,686.43/20,886.83
  6. Step 6: Final answer
    x = 10,271.58

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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.