Home / 20,668.36-28,524.09-11,717.50

Finding the Fourth Proportional to 20,668.36, 28,524.09 and 11,717.50

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Solution

The fourth proportional to 20,668.36, 28,524.09 and 11,717.50 is: 16,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.36 : 28,524.09 = 11,717.50 : x
  2. Step 2: Convert to fraction form
    20,668.36/28,524.09 = 11,717.50/x
  3. Step 3: Cross multiply
    20,668.36x = 28,524.09 × 11,717.50
  4. Step 4: Simplify right side
    20,668.36x = 334,231,024.58
  5. Step 5: Solve for x
    x = 334,231,024.58/20,668.36
  6. Step 6: Final answer
    x = 16,171.14

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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.