Home / 20,986.92-28,962.58-11,556.04

Finding the Fourth Proportional to 20,986.92, 28,962.58 and 11,556.04

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Solution

The fourth proportional to 20,986.92, 28,962.58 and 11,556.04 is: 15,947.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.92 : 28,962.58 = 11,556.04 : x
  2. Step 2: Convert to fraction form
    20,986.92/28,962.58 = 11,556.04/x
  3. Step 3: Cross multiply
    20,986.92x = 28,962.58 × 11,556.04
  4. Step 4: Simplify right side
    20,986.92x = 334,692,732.98
  5. Step 5: Solve for x
    x = 334,692,732.98/20,986.92
  6. Step 6: Final answer
    x = 15,947.68

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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.