Home / 19,940.28-29,915.60-7,461.28

Finding the Fourth Proportional to 19,940.28, 29,915.60 and 7,461.28

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Solution

The fourth proportional to 19,940.28, 29,915.60 and 7,461.28 is: 11,193.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.28 : 29,915.60 = 7,461.28 : x
  2. Step 2: Convert to fraction form
    19,940.28/29,915.60 = 7,461.28/x
  3. Step 3: Cross multiply
    19,940.28x = 29,915.60 × 7,461.28
  4. Step 4: Simplify right side
    19,940.28x = 223,208,604.80
  5. Step 5: Solve for x
    x = 223,208,604.80/19,940.28
  6. Step 6: Final answer
    x = 11,193.86

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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.