Home / 20,857.16-28,782.93-11,297.01

Finding the Fourth Proportional to 20,857.16, 28,782.93 and 11,297.01

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Solution

The fourth proportional to 20,857.16, 28,782.93 and 11,297.01 is: 15,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.16 : 28,782.93 = 11,297.01 : x
  2. Step 2: Convert to fraction form
    20,857.16/28,782.93 = 11,297.01/x
  3. Step 3: Cross multiply
    20,857.16x = 28,782.93 × 11,297.01
  4. Step 4: Simplify right side
    20,857.16x = 325,161,016.96
  5. Step 5: Solve for x
    x = 325,161,016.96/20,857.16
  6. Step 6: Final answer
    x = 15,589.90

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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.