Home / 13,989.06-20,989.26-13,767.93

Finding the Fourth Proportional to 13,989.06, 20,989.26 and 13,767.93

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Solution

The fourth proportional to 13,989.06, 20,989.26 and 13,767.93 is: 20,657.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.06 : 20,989.26 = 13,767.93 : x
  2. Step 2: Convert to fraction form
    13,989.06/20,989.26 = 13,767.93/x
  3. Step 3: Cross multiply
    13,989.06x = 20,989.26 × 13,767.93
  4. Step 4: Simplify right side
    13,989.06x = 288,978,662.43
  5. Step 5: Solve for x
    x = 288,978,662.43/13,989.06
  6. Step 6: Final answer
    x = 20,657.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.