Home / 11,105.60-16,629.60-8,782.40

Finding the Fourth Proportional to 11,105.60, 16,629.60 and 8,782.40

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Solution

The fourth proportional to 11,105.60, 16,629.60 and 8,782.40 is: 13,150.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.60 : 16,629.60 = 8,782.40 : x
  2. Step 2: Convert to fraction form
    11,105.60/16,629.60 = 8,782.40/x
  3. Step 3: Cross multiply
    11,105.60x = 16,629.60 × 8,782.40
  4. Step 4: Simplify right side
    11,105.60x = 146,047,799.04
  5. Step 5: Solve for x
    x = 146,047,799.04/11,105.60
  6. Step 6: Final answer
    x = 13,150.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.