Home / 20,466.24-28,238.40-11,512

Finding the Fourth Proportional to 20,466.24, 28,238.40 and 11,512

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Solution

The fourth proportional to 20,466.24, 28,238.40 and 11,512 is: 15,883.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.24 : 28,238.40 = 11,512 : x
  2. Step 2: Convert to fraction form
    20,466.24/28,238.40 = 11,512/x
  3. Step 3: Cross multiply
    20,466.24x = 28,238.40 × 11,512
  4. Step 4: Simplify right side
    20,466.24x = 325,080,460.80
  5. Step 5: Solve for x
    x = 325,080,460.80/20,466.24
  6. Step 6: Final answer
    x = 15,883.74

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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.