Home / 13,696.13-18,900.27-7,728.35

Finding the Fourth Proportional to 13,696.13, 18,900.27 and 7,728.35

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Solution

The fourth proportional to 13,696.13, 18,900.27 and 7,728.35 is: 10,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696.13 : 18,900.27 = 7,728.35 : x
  2. Step 2: Convert to fraction form
    13,696.13/18,900.27 = 7,728.35/x
  3. Step 3: Cross multiply
    13,696.13x = 18,900.27 × 7,728.35
  4. Step 4: Simplify right side
    13,696.13x = 146,067,901.65
  5. Step 5: Solve for x
    x = 146,067,901.65/13,696.13
  6. Step 6: Final answer
    x = 10,664.90

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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.