Home / 20,731.43-28,610.46-11,300.60

Finding the Fourth Proportional to 20,731.43, 28,610.46 and 11,300.60

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Solution

The fourth proportional to 20,731.43, 28,610.46 and 11,300.60 is: 15,595.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.43 : 28,610.46 = 11,300.60 : x
  2. Step 2: Convert to fraction form
    20,731.43/28,610.46 = 11,300.60/x
  3. Step 3: Cross multiply
    20,731.43x = 28,610.46 × 11,300.60
  4. Step 4: Simplify right side
    20,731.43x = 323,315,221.22
  5. Step 5: Solve for x
    x = 323,315,221.22/20,731.43
  6. Step 6: Final answer
    x = 15,595.42

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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.