Home / 20,693.25-28,556.69-11,261.88

Finding the Fourth Proportional to 20,693.25, 28,556.69 and 11,261.88

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Solution

The fourth proportional to 20,693.25, 28,556.69 and 11,261.88 is: 15,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.25 : 28,556.69 = 11,261.88 : x
  2. Step 2: Convert to fraction form
    20,693.25/28,556.69 = 11,261.88/x
  3. Step 3: Cross multiply
    20,693.25x = 28,556.69 × 11,261.88
  4. Step 4: Simplify right side
    20,693.25x = 321,602,015.98
  5. Step 5: Solve for x
    x = 321,602,015.98/20,693.25
  6. Step 6: Final answer
    x = 15,541.40

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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.