Home / 20,693.24-28,556.60-11,261.80

Finding the Fourth Proportional to 20,693.24, 28,556.60 and 11,261.80

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Solution

The fourth proportional to 20,693.24, 28,556.60 and 11,261.80 is: 15,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.24 : 28,556.60 = 11,261.80 : x
  2. Step 2: Convert to fraction form
    20,693.24/28,556.60 = 11,261.80/x
  3. Step 3: Cross multiply
    20,693.24x = 28,556.60 × 11,261.80
  4. Step 4: Simplify right side
    20,693.24x = 321,598,717.88
  5. Step 5: Solve for x
    x = 321,598,717.88/20,693.24
  6. Step 6: Final answer
    x = 15,541.25

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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.