Home / 20,775.09-28,668.54-11,822.43

Finding the Fourth Proportional to 20,775.09, 28,668.54 and 11,822.43

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Solution

The fourth proportional to 20,775.09, 28,668.54 and 11,822.43 is: 16,314.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.09 : 28,668.54 = 11,822.43 : x
  2. Step 2: Convert to fraction form
    20,775.09/28,668.54 = 11,822.43/x
  3. Step 3: Cross multiply
    20,775.09x = 28,668.54 × 11,822.43
  4. Step 4: Simplify right side
    20,775.09x = 338,931,807.35
  5. Step 5: Solve for x
    x = 338,931,807.35/20,775.09
  6. Step 6: Final answer
    x = 16,314.34

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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.