Home / 20,556.90-28,369.86-11,601.14

Finding the Fourth Proportional to 20,556.90, 28,369.86 and 11,601.14

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Solution

The fourth proportional to 20,556.90, 28,369.86 and 11,601.14 is: 16,010.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.90 : 28,369.86 = 11,601.14 : x
  2. Step 2: Convert to fraction form
    20,556.90/28,369.86 = 11,601.14/x
  3. Step 3: Cross multiply
    20,556.90x = 28,369.86 × 11,601.14
  4. Step 4: Simplify right side
    20,556.90x = 329,122,575.79
  5. Step 5: Solve for x
    x = 329,122,575.79/20,556.90
  6. Step 6: Final answer
    x = 16,010.32

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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.