Home / 20,135.49-27,786.08-12,073.60

Finding the Fourth Proportional to 20,135.49, 27,786.08 and 12,073.60

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Solution

The fourth proportional to 20,135.49, 27,786.08 and 12,073.60 is: 16,661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.49 : 27,786.08 = 12,073.60 : x
  2. Step 2: Convert to fraction form
    20,135.49/27,786.08 = 12,073.60/x
  3. Step 3: Cross multiply
    20,135.49x = 27,786.08 × 12,073.60
  4. Step 4: Simplify right side
    20,135.49x = 335,477,946.02
  5. Step 5: Solve for x
    x = 335,477,946.02/20,135.49
  6. Step 6: Final answer
    x = 16,661.03

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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.