Home / 11,885.64-17,827.08-3,121.23

Finding the Fourth Proportional to 11,885.64, 17,827.08 and 3,121.23

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Solution

The fourth proportional to 11,885.64, 17,827.08 and 3,121.23 is: 4,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,885.64 : 17,827.08 = 3,121.23 : x
  2. Step 2: Convert to fraction form
    11,885.64/17,827.08 = 3,121.23/x
  3. Step 3: Cross multiply
    11,885.64x = 17,827.08 × 3,121.23
  4. Step 4: Simplify right side
    11,885.64x = 55,642,416.91
  5. Step 5: Solve for x
    x = 55,642,416.91/11,885.64
  6. Step 6: Final answer
    x = 4,681.48

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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.