Home / 12,915.06-19,372.77-7,361.79

Finding the Fourth Proportional to 12,915.06, 19,372.77 and 7,361.79

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Solution

The fourth proportional to 12,915.06, 19,372.77 and 7,361.79 is: 11,042.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.06 : 19,372.77 = 7,361.79 : x
  2. Step 2: Convert to fraction form
    12,915.06/19,372.77 = 7,361.79/x
  3. Step 3: Cross multiply
    12,915.06x = 19,372.77 × 7,361.79
  4. Step 4: Simplify right side
    12,915.06x = 142,618,264.46
  5. Step 5: Solve for x
    x = 142,618,264.46/12,915.06
  6. Step 6: Final answer
    x = 11,042.79

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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.