Home / 21,786.64-30,064.44-12,355.84

Finding the Fourth Proportional to 21,786.64, 30,064.44 and 12,355.84

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Solution

The fourth proportional to 21,786.64, 30,064.44 and 12,355.84 is: 17,050.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.64 : 30,064.44 = 12,355.84 : x
  2. Step 2: Convert to fraction form
    21,786.64/30,064.44 = 12,355.84/x
  3. Step 3: Cross multiply
    21,786.64x = 30,064.44 × 12,355.84
  4. Step 4: Simplify right side
    21,786.64x = 371,471,410.33
  5. Step 5: Solve for x
    x = 371,471,410.33/21,786.64
  6. Step 6: Final answer
    x = 17,050.42

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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.