Home / 20,121.09-27,768.40-11,623.57

Finding the Fourth Proportional to 20,121.09, 27,768.40 and 11,623.57

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Solution

The fourth proportional to 20,121.09, 27,768.40 and 11,623.57 is: 16,041.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.09 : 27,768.40 = 11,623.57 : x
  2. Step 2: Convert to fraction form
    20,121.09/27,768.40 = 11,623.57/x
  3. Step 3: Cross multiply
    20,121.09x = 27,768.40 × 11,623.57
  4. Step 4: Simplify right side
    20,121.09x = 322,767,941.19
  5. Step 5: Solve for x
    x = 322,767,941.19/20,121.09
  6. Step 6: Final answer
    x = 16,041.28

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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.