Home / 21,968.18-30,315.70-11,896.54

Finding the Fourth Proportional to 21,968.18, 30,315.70 and 11,896.54

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Solution

The fourth proportional to 21,968.18, 30,315.70 and 11,896.54 is: 16,417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.18 : 30,315.70 = 11,896.54 : x
  2. Step 2: Convert to fraction form
    21,968.18/30,315.70 = 11,896.54/x
  3. Step 3: Cross multiply
    21,968.18x = 30,315.70 × 11,896.54
  4. Step 4: Simplify right side
    21,968.18x = 360,651,937.68
  5. Step 5: Solve for x
    x = 360,651,937.68/21,968.18
  6. Step 6: Final answer
    x = 16,417.01

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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.