Home / 15,110.85-20,852.49-8,396.31

Finding the Fourth Proportional to 15,110.85, 20,852.49 and 8,396.31

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Solution

The fourth proportional to 15,110.85, 20,852.49 and 8,396.31 is: 11,586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.85 : 20,852.49 = 8,396.31 : x
  2. Step 2: Convert to fraction form
    15,110.85/20,852.49 = 8,396.31/x
  3. Step 3: Cross multiply
    15,110.85x = 20,852.49 × 8,396.31
  4. Step 4: Simplify right side
    15,110.85x = 175,083,915.47
  5. Step 5: Solve for x
    x = 175,083,915.47/15,110.85
  6. Step 6: Final answer
    x = 11,586.63

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1.5x scale

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.