Home / 11,855.42-17,791.90-5,615.45

Finding the Fourth Proportional to 11,855.42, 17,791.90 and 5,615.45

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Solution

The fourth proportional to 11,855.42, 17,791.90 and 5,615.45 is: 8,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,855.42 : 17,791.90 = 5,615.45 : x
  2. Step 2: Convert to fraction form
    11,855.42/17,791.90 = 5,615.45/x
  3. Step 3: Cross multiply
    11,855.42x = 17,791.90 × 5,615.45
  4. Step 4: Simplify right side
    11,855.42x = 99,909,422.08
  5. Step 5: Solve for x
    x = 99,909,422.08/11,855.42
  6. Step 6: Final answer
    x = 8,427.32

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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.