Home / 21,856.49-30,161.90-12,296.38

Finding the Fourth Proportional to 21,856.49, 30,161.90 and 12,296.38

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Solution

The fourth proportional to 21,856.49, 30,161.90 and 12,296.38 is: 16,968.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.49 : 30,161.90 = 12,296.38 : x
  2. Step 2: Convert to fraction form
    21,856.49/30,161.90 = 12,296.38/x
  3. Step 3: Cross multiply
    21,856.49x = 30,161.90 × 12,296.38
  4. Step 4: Simplify right side
    21,856.49x = 370,882,033.11
  5. Step 5: Solve for x
    x = 370,882,033.11/21,856.49
  6. Step 6: Final answer
    x = 16,968.97

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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.