Home / 20,668.46-28,522.34-11,237.09

Finding the Fourth Proportional to 20,668.46, 28,522.34 and 11,237.09

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Solution

The fourth proportional to 20,668.46, 28,522.34 and 11,237.09 is: 15,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.46 : 28,522.34 = 11,237.09 : x
  2. Step 2: Convert to fraction form
    20,668.46/28,522.34 = 11,237.09/x
  3. Step 3: Cross multiply
    20,668.46x = 28,522.34 × 11,237.09
  4. Step 4: Simplify right side
    20,668.46x = 320,507,902.79
  5. Step 5: Solve for x
    x = 320,507,902.79/20,668.46
  6. Step 6: Final answer
    x = 15,507.11

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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.