Home / 20,860.63-31,299.90-13,843.09

Finding the Fourth Proportional to 20,860.63, 31,299.90 and 13,843.09

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Solution

The fourth proportional to 20,860.63, 31,299.90 and 13,843.09 is: 20,770.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.63 : 31,299.90 = 13,843.09 : x
  2. Step 2: Convert to fraction form
    20,860.63/31,299.90 = 13,843.09/x
  3. Step 3: Cross multiply
    20,860.63x = 31,299.90 × 13,843.09
  4. Step 4: Simplify right side
    20,860.63x = 433,287,332.69
  5. Step 5: Solve for x
    x = 433,287,332.69/20,860.63
  6. Step 6: Final answer
    x = 20,770.58

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1.5x scale

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.