Home / 20,214.36-27,899.64-12,255.30

Finding the Fourth Proportional to 20,214.36, 27,899.64 and 12,255.30

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Solution

The fourth proportional to 20,214.36, 27,899.64 and 12,255.30 is: 16,914.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.36 : 27,899.64 = 12,255.30 : x
  2. Step 2: Convert to fraction form
    20,214.36/27,899.64 = 12,255.30/x
  3. Step 3: Cross multiply
    20,214.36x = 27,899.64 × 12,255.30
  4. Step 4: Simplify right side
    20,214.36x = 341,918,458.09
  5. Step 5: Solve for x
    x = 341,918,458.09/20,214.36
  6. Step 6: Final answer
    x = 16,914.63

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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.