Home / 13,696.06-18,900.25-7,727.58

Finding the Fourth Proportional to 13,696.06, 18,900.25 and 7,727.58

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Solution

The fourth proportional to 13,696.06, 18,900.25 and 7,727.58 is: 10,663.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696.06 : 18,900.25 = 7,727.58 : x
  2. Step 2: Convert to fraction form
    13,696.06/18,900.25 = 7,727.58/x
  3. Step 3: Cross multiply
    13,696.06x = 18,900.25 × 7,727.58
  4. Step 4: Simplify right side
    13,696.06x = 146,053,193.90
  5. Step 5: Solve for x
    x = 146,053,193.90/13,696.06
  6. Step 6: Final answer
    x = 10,663.88

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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.