Home / 21,968.10-30,315.72-11,896.35

Finding the Fourth Proportional to 21,968.10, 30,315.72 and 11,896.35

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Solution

The fourth proportional to 21,968.10, 30,315.72 and 11,896.35 is: 16,416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.10 : 30,315.72 = 11,896.35 : x
  2. Step 2: Convert to fraction form
    21,968.10/30,315.72 = 11,896.35/x
  3. Step 3: Cross multiply
    21,968.10x = 30,315.72 × 11,896.35
  4. Step 4: Simplify right side
    21,968.10x = 360,646,415.62
  5. Step 5: Solve for x
    x = 360,646,415.62/21,968.10
  6. Step 6: Final answer
    x = 16,416.82

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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.