Home / 15,111.30-20,852.40-8,396.82

Finding the Fourth Proportional to 15,111.30, 20,852.40 and 8,396.82

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Solution

The fourth proportional to 15,111.30, 20,852.40 and 8,396.82 is: 11,586.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.30 : 20,852.40 = 8,396.82 : x
  2. Step 2: Convert to fraction form
    15,111.30/20,852.40 = 8,396.82/x
  3. Step 3: Cross multiply
    15,111.30x = 20,852.40 × 8,396.82
  4. Step 4: Simplify right side
    15,111.30x = 175,093,849.37
  5. Step 5: Solve for x
    x = 175,093,849.37/15,111.30
  6. Step 6: Final answer
    x = 11,586.95

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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.