Home / 43,453.16-65,178.60-13,872.80

Finding the Fourth Proportional to 43,453.16, 65,178.60 and 13,872.80

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Solution

The fourth proportional to 43,453.16, 65,178.60 and 13,872.80 is: 20,808.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,453.16 : 65,178.60 = 13,872.80 : x
  2. Step 2: Convert to fraction form
    43,453.16/65,178.60 = 13,872.80/x
  3. Step 3: Cross multiply
    43,453.16x = 65,178.60 × 13,872.80
  4. Step 4: Simplify right side
    43,453.16x = 904,209,682.08
  5. Step 5: Solve for x
    x = 904,209,682.08/43,453.16
  6. Step 6: Final answer
    x = 20,808.84

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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.