Home / 21,856.08-30,163.95-12,426.06

Finding the Fourth Proportional to 21,856.08, 30,163.95 and 12,426.06

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Solution

The fourth proportional to 21,856.08, 30,163.95 and 12,426.06 is: 17,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.08 : 30,163.95 = 12,426.06 : x
  2. Step 2: Convert to fraction form
    21,856.08/30,163.95 = 12,426.06/x
  3. Step 3: Cross multiply
    21,856.08x = 30,163.95 × 12,426.06
  4. Step 4: Simplify right side
    21,856.08x = 374,819,052.54
  5. Step 5: Solve for x
    x = 374,819,052.54/21,856.08
  6. Step 6: Final answer
    x = 17,149.42

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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.