Home / 43,815.88-65,706.52-18,857.80

Finding the Fourth Proportional to 43,815.88, 65,706.52 and 18,857.80

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Solution

The fourth proportional to 43,815.88, 65,706.52 and 18,857.80 is: 28,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,815.88 : 65,706.52 = 18,857.80 : x
  2. Step 2: Convert to fraction form
    43,815.88/65,706.52 = 18,857.80/x
  3. Step 3: Cross multiply
    43,815.88x = 65,706.52 × 18,857.80
  4. Step 4: Simplify right side
    43,815.88x = 1,239,080,412.86
  5. Step 5: Solve for x
    x = 1,239,080,412.86/43,815.88
  6. Step 6: Final answer
    x = 28,279.25

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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.