Home / 20,556.21-30,828.24-10,690.14

Finding the Fourth Proportional to 20,556.21, 30,828.24 and 10,690.14

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Solution

The fourth proportional to 20,556.21, 30,828.24 and 10,690.14 is: 16,032.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.21 : 30,828.24 = 10,690.14 : x
  2. Step 2: Convert to fraction form
    20,556.21/30,828.24 = 10,690.14/x
  3. Step 3: Cross multiply
    20,556.21x = 30,828.24 × 10,690.14
  4. Step 4: Simplify right side
    20,556.21x = 329,558,201.55
  5. Step 5: Solve for x
    x = 329,558,201.55/20,556.21
  6. Step 6: Final answer
    x = 16,032.05

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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.