Home / 11,421.21-17,127.54-3,922.64

Finding the Fourth Proportional to 11,421.21, 17,127.54 and 3,922.64

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Solution

The fourth proportional to 11,421.21, 17,127.54 and 3,922.64 is: 5,882.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.21 : 17,127.54 = 3,922.64 : x
  2. Step 2: Convert to fraction form
    11,421.21/17,127.54 = 3,922.64/x
  3. Step 3: Cross multiply
    11,421.21x = 17,127.54 × 3,922.64
  4. Step 4: Simplify right side
    11,421.21x = 67,185,173.51
  5. Step 5: Solve for x
    x = 67,185,173.51/11,421.21
  6. Step 6: Final answer
    x = 5,882.49

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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.