Home / 11,861.80-16,369.86-6,557.20

Finding the Fourth Proportional to 11,861.80, 16,369.86 and 6,557.20

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Solution

The fourth proportional to 11,861.80, 16,369.86 and 6,557.20 is: 9,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.80 : 16,369.86 = 6,557.20 : x
  2. Step 2: Convert to fraction form
    11,861.80/16,369.86 = 6,557.20/x
  3. Step 3: Cross multiply
    11,861.80x = 16,369.86 × 6,557.20
  4. Step 4: Simplify right side
    11,861.80x = 107,340,445.99
  5. Step 5: Solve for x
    x = 107,340,445.99/11,861.80
  6. Step 6: Final answer
    x = 9,049.25

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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.