Home / 13,696.40-18,868.26-13,029.36

Finding the Fourth Proportional to 13,696.40, 18,868.26 and 13,029.36

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Solution

The fourth proportional to 13,696.40, 18,868.26 and 13,029.36 is: 17,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696.40 : 18,868.26 = 13,029.36 : x
  2. Step 2: Convert to fraction form
    13,696.40/18,868.26 = 13,029.36/x
  3. Step 3: Cross multiply
    13,696.40x = 18,868.26 × 13,029.36
  4. Step 4: Simplify right side
    13,696.40x = 245,841,352.11
  5. Step 5: Solve for x
    x = 245,841,352.11/13,696.40
  6. Step 6: Final answer
    x = 17,949.34

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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.