Home / 11,851.08-17,781.81-5,615.55

Finding the Fourth Proportional to 11,851.08, 17,781.81 and 5,615.55

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Solution

The fourth proportional to 11,851.08, 17,781.81 and 5,615.55 is: 8,425.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,851.08 : 17,781.81 = 5,615.55 : x
  2. Step 2: Convert to fraction form
    11,851.08/17,781.81 = 5,615.55/x
  3. Step 3: Cross multiply
    11,851.08x = 17,781.81 × 5,615.55
  4. Step 4: Simplify right side
    11,851.08x = 99,854,643.15
  5. Step 5: Solve for x
    x = 99,854,643.15/11,851.08
  6. Step 6: Final answer
    x = 8,425.78

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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.