Home / 21,950.78-30,293.44-12,392.28

Finding the Fourth Proportional to 21,950.78, 30,293.44 and 12,392.28

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Solution

The fourth proportional to 21,950.78, 30,293.44 and 12,392.28 is: 17,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.78 : 30,293.44 = 12,392.28 : x
  2. Step 2: Convert to fraction form
    21,950.78/30,293.44 = 12,392.28/x
  3. Step 3: Cross multiply
    21,950.78x = 30,293.44 × 12,392.28
  4. Step 4: Simplify right side
    21,950.78x = 375,404,759.66
  5. Step 5: Solve for x
    x = 375,404,759.66/21,950.78
  6. Step 6: Final answer
    x = 17,102.12

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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.