Home / 11,885.54-16,396.90-7,167.20

Finding the Fourth Proportional to 11,885.54, 16,396.90 and 7,167.20

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Solution

The fourth proportional to 11,885.54, 16,396.90 and 7,167.20 is: 9,887.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,885.54 : 16,396.90 = 7,167.20 : x
  2. Step 2: Convert to fraction form
    11,885.54/16,396.90 = 7,167.20/x
  3. Step 3: Cross multiply
    11,885.54x = 16,396.90 × 7,167.20
  4. Step 4: Simplify right side
    11,885.54x = 117,519,825.84
  5. Step 5: Solve for x
    x = 117,519,825.84/11,885.54
  6. Step 6: Final answer
    x = 9,887.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.