Home / 20,847.63-28,769.75-11,287.52

Finding the Fourth Proportional to 20,847.63, 28,769.75 and 11,287.52

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Solution

The fourth proportional to 20,847.63, 28,769.75 and 11,287.52 is: 15,576.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.63 : 28,769.75 = 11,287.52 : x
  2. Step 2: Convert to fraction form
    20,847.63/28,769.75 = 11,287.52/x
  3. Step 3: Cross multiply
    20,847.63x = 28,769.75 × 11,287.52
  4. Step 4: Simplify right side
    20,847.63x = 324,739,144.01
  5. Step 5: Solve for x
    x = 324,739,144.01/20,847.63
  6. Step 6: Final answer
    x = 15,576.79

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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.