Home / 30,915.75-42,661.44-17,302

Finding the Fourth Proportional to 30,915.75, 42,661.44 and 17,302

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Solution

The fourth proportional to 30,915.75, 42,661.44 and 17,302 is: 23,875.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,915.75 : 42,661.44 = 17,302 : x
  2. Step 2: Convert to fraction form
    30,915.75/42,661.44 = 17,302/x
  3. Step 3: Cross multiply
    30,915.75x = 42,661.44 × 17,302
  4. Step 4: Simplify right side
    30,915.75x = 738,128,234.88
  5. Step 5: Solve for x
    x = 738,128,234.88/30,915.75
  6. Step 6: Final answer
    x = 23,875.48

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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.