Home / 20,271.40-27,963.30-11,886.28

Finding the Fourth Proportional to 20,271.40, 27,963.30 and 11,886.28

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Solution

The fourth proportional to 20,271.40, 27,963.30 and 11,886.28 is: 16,396.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.40 : 27,963.30 = 11,886.28 : x
  2. Step 2: Convert to fraction form
    20,271.40/27,963.30 = 11,886.28/x
  3. Step 3: Cross multiply
    20,271.40x = 27,963.30 × 11,886.28
  4. Step 4: Simplify right side
    20,271.40x = 332,379,613.52
  5. Step 5: Solve for x
    x = 332,379,613.52/20,271.40
  6. Step 6: Final answer
    x = 16,396.48

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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.