Home / 11,929.95-17,901-4,915.35

Finding the Fourth Proportional to 11,929.95, 17,901 and 4,915.35

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Solution

The fourth proportional to 11,929.95, 17,901 and 4,915.35 is: 7,375.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.95 : 17,901 = 4,915.35 : x
  2. Step 2: Convert to fraction form
    11,929.95/17,901 = 4,915.35/x
  3. Step 3: Cross multiply
    11,929.95x = 17,901 × 4,915.35
  4. Step 4: Simplify right side
    11,929.95x = 87,989,680.35
  5. Step 5: Solve for x
    x = 87,989,680.35/11,929.95
  6. Step 6: Final answer
    x = 7,375.53

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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.