Home / 13,754.74-18,981.48-7,786.36

Finding the Fourth Proportional to 13,754.74, 18,981.48 and 7,786.36

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Solution

The fourth proportional to 13,754.74, 18,981.48 and 7,786.36 is: 10,745.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.74 : 18,981.48 = 7,786.36 : x
  2. Step 2: Convert to fraction form
    13,754.74/18,981.48 = 7,786.36/x
  3. Step 3: Cross multiply
    13,754.74x = 18,981.48 × 7,786.36
  4. Step 4: Simplify right side
    13,754.74x = 147,796,636.61
  5. Step 5: Solve for x
    x = 147,796,636.61/13,754.74
  6. Step 6: Final answer
    x = 10,745.14

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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.