Home / 21,768.36-30,039.84-12,336.96

Finding the Fourth Proportional to 21,768.36, 30,039.84 and 12,336.96

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Solution

The fourth proportional to 21,768.36, 30,039.84 and 12,336.96 is: 17,024.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.36 : 30,039.84 = 12,336.96 : x
  2. Step 2: Convert to fraction form
    21,768.36/30,039.84 = 12,336.96/x
  3. Step 3: Cross multiply
    21,768.36x = 30,039.84 × 12,336.96
  4. Step 4: Simplify right side
    21,768.36x = 370,600,304.49
  5. Step 5: Solve for x
    x = 370,600,304.49/21,768.36
  6. Step 6: Final answer
    x = 17,024.72

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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.