Home / 11,861.65-16,370.73-6,825.78

Finding the Fourth Proportional to 11,861.65, 16,370.73 and 6,825.78

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Solution

The fourth proportional to 11,861.65, 16,370.73 and 6,825.78 is: 9,420.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.65 : 16,370.73 = 6,825.78 : x
  2. Step 2: Convert to fraction form
    11,861.65/16,370.73 = 6,825.78/x
  3. Step 3: Cross multiply
    11,861.65x = 16,370.73 × 6,825.78
  4. Step 4: Simplify right side
    11,861.65x = 111,742,885.44
  5. Step 5: Solve for x
    x = 111,742,885.44/11,861.65
  6. Step 6: Final answer
    x = 9,420.52

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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.