Home / 21,968.29-30,316.05-11,896.48

Finding the Fourth Proportional to 21,968.29, 30,316.05 and 11,896.48

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Solution

The fourth proportional to 21,968.29, 30,316.05 and 11,896.48 is: 16,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.29 : 30,316.05 = 11,896.48 : x
  2. Step 2: Convert to fraction form
    21,968.29/30,316.05 = 11,896.48/x
  3. Step 3: Cross multiply
    21,968.29x = 30,316.05 × 11,896.48
  4. Step 4: Simplify right side
    21,968.29x = 360,654,130.92
  5. Step 5: Solve for x
    x = 360,654,130.92/21,968.29
  6. Step 6: Final answer
    x = 16,417.04

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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.