Home / 13,820.16-20,716.80-6,873.60

Finding the Fourth Proportional to 13,820.16, 20,716.80 and 6,873.60

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Solution

The fourth proportional to 13,820.16, 20,716.80 and 6,873.60 is: 10,303.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.16 : 20,716.80 = 6,873.60 : x
  2. Step 2: Convert to fraction form
    13,820.16/20,716.80 = 6,873.60/x
  3. Step 3: Cross multiply
    13,820.16x = 20,716.80 × 6,873.60
  4. Step 4: Simplify right side
    13,820.16x = 142,398,996.48
  5. Step 5: Solve for x
    x = 142,398,996.48/13,820.16
  6. Step 6: Final answer
    x = 10,303.72

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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.