Home / 11,861.60-16,368.72-6,556.28

Finding the Fourth Proportional to 11,861.60, 16,368.72 and 6,556.28

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Solution

The fourth proportional to 11,861.60, 16,368.72 and 6,556.28 is: 9,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.60 : 16,368.72 = 6,556.28 : x
  2. Step 2: Convert to fraction form
    11,861.60/16,368.72 = 6,556.28/x
  3. Step 3: Cross multiply
    11,861.60x = 16,368.72 × 6,556.28
  4. Step 4: Simplify right side
    11,861.60x = 107,317,911.56
  5. Step 5: Solve for x
    x = 107,317,911.56/11,861.60
  6. Step 6: Final answer
    x = 9,047.51

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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.