Home / 20,505.64-28,297.65-11,556.02

Finding the Fourth Proportional to 20,505.64, 28,297.65 and 11,556.02

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Solution

The fourth proportional to 20,505.64, 28,297.65 and 11,556.02 is: 15,947.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.64 : 28,297.65 = 11,556.02 : x
  2. Step 2: Convert to fraction form
    20,505.64/28,297.65 = 11,556.02/x
  3. Step 3: Cross multiply
    20,505.64x = 28,297.65 × 11,556.02
  4. Step 4: Simplify right side
    20,505.64x = 327,008,209.35
  5. Step 5: Solve for x
    x = 327,008,209.35/20,505.64
  6. Step 6: Final answer
    x = 15,947.23

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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.