Home / 11,751.30-16,216.20-6,445.80

Finding the Fourth Proportional to 11,751.30, 16,216.20 and 6,445.80

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Solution

The fourth proportional to 11,751.30, 16,216.20 and 6,445.80 is: 8,894.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,751.30 : 16,216.20 = 6,445.80 : x
  2. Step 2: Convert to fraction form
    11,751.30/16,216.20 = 6,445.80/x
  3. Step 3: Cross multiply
    11,751.30x = 16,216.20 × 6,445.80
  4. Step 4: Simplify right side
    11,751.30x = 104,526,381.96
  5. Step 5: Solve for x
    x = 104,526,381.96/11,751.30
  6. Step 6: Final answer
    x = 8,894.88

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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.