Home / 13,821.36-19,085.40-11,851.44

Finding the Fourth Proportional to 13,821.36, 19,085.40 and 11,851.44

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Solution

The fourth proportional to 13,821.36, 19,085.40 and 11,851.44 is: 16,365.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.36 : 19,085.40 = 11,851.44 : x
  2. Step 2: Convert to fraction form
    13,821.36/19,085.40 = 11,851.44/x
  3. Step 3: Cross multiply
    13,821.36x = 19,085.40 × 11,851.44
  4. Step 4: Simplify right side
    13,821.36x = 226,189,472.98
  5. Step 5: Solve for x
    x = 226,189,472.98/13,821.36
  6. Step 6: Final answer
    x = 16,365.21

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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.