Home / 10,922.45-16,383.65-8,720.87

Finding the Fourth Proportional to 10,922.45, 16,383.65 and 8,720.87

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Solution

The fourth proportional to 10,922.45, 16,383.65 and 8,720.87 is: 13,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,922.45 : 16,383.65 = 8,720.87 : x
  2. Step 2: Convert to fraction form
    10,922.45/16,383.65 = 8,720.87/x
  3. Step 3: Cross multiply
    10,922.45x = 16,383.65 × 8,720.87
  4. Step 4: Simplify right side
    10,922.45x = 142,879,556.25
  5. Step 5: Solve for x
    x = 142,879,556.25/10,922.45
  6. Step 6: Final answer
    x = 13,081.28

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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.