Home / 20,967.09-28,933.92-11,535.60

Finding the Fourth Proportional to 20,967.09, 28,933.92 and 11,535.60

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Solution

The fourth proportional to 20,967.09, 28,933.92 and 11,535.60 is: 15,918.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.09 : 28,933.92 = 11,535.60 : x
  2. Step 2: Convert to fraction form
    20,967.09/28,933.92 = 11,535.60/x
  3. Step 3: Cross multiply
    20,967.09x = 28,933.92 × 11,535.60
  4. Step 4: Simplify right side
    20,967.09x = 333,770,127.55
  5. Step 5: Solve for x
    x = 333,770,127.55/20,967.09
  6. Step 6: Final answer
    x = 15,918.76

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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.