Home / 15,111.28-20,852.58-8,396.44

Finding the Fourth Proportional to 15,111.28, 20,852.58 and 8,396.44

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Solution

The fourth proportional to 15,111.28, 20,852.58 and 8,396.44 is: 11,586.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.28 : 20,852.58 = 8,396.44 : x
  2. Step 2: Convert to fraction form
    15,111.28/20,852.58 = 8,396.44/x
  3. Step 3: Cross multiply
    15,111.28x = 20,852.58 × 8,396.44
  4. Step 4: Simplify right side
    15,111.28x = 175,087,436.82
  5. Step 5: Solve for x
    x = 175,087,436.82/15,111.28
  6. Step 6: Final answer
    x = 11,586.54

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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.