Home / 11,938.36-17,915.77-4,147.17

Finding the Fourth Proportional to 11,938.36, 17,915.77 and 4,147.17

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Solution

The fourth proportional to 11,938.36, 17,915.77 and 4,147.17 is: 6,223.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.36 : 17,915.77 = 4,147.17 : x
  2. Step 2: Convert to fraction form
    11,938.36/17,915.77 = 4,147.17/x
  3. Step 3: Cross multiply
    11,938.36x = 17,915.77 × 4,147.17
  4. Step 4: Simplify right side
    11,938.36x = 74,299,773.11
  5. Step 5: Solve for x
    x = 74,299,773.11/11,938.36
  6. Step 6: Final answer
    x = 6,223.62

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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.