Home / 11,156.81-15,396.33-6,120.90

Finding the Fourth Proportional to 11,156.81, 15,396.33 and 6,120.90

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Solution

The fourth proportional to 11,156.81, 15,396.33 and 6,120.90 is: 8,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.81 : 15,396.33 = 6,120.90 : x
  2. Step 2: Convert to fraction form
    11,156.81/15,396.33 = 6,120.90/x
  3. Step 3: Cross multiply
    11,156.81x = 15,396.33 × 6,120.90
  4. Step 4: Simplify right side
    11,156.81x = 94,239,396.30
  5. Step 5: Solve for x
    x = 94,239,396.30/11,156.81
  6. Step 6: Final answer
    x = 8,446.80

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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.