Home / 21,862.24-30,163.44-12,910.48

Finding the Fourth Proportional to 21,862.24, 30,163.44 and 12,910.48

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Solution

The fourth proportional to 21,862.24, 30,163.44 and 12,910.48 is: 17,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.24 : 30,163.44 = 12,910.48 : x
  2. Step 2: Convert to fraction form
    21,862.24/30,163.44 = 12,910.48/x
  3. Step 3: Cross multiply
    21,862.24x = 30,163.44 × 12,910.48
  4. Step 4: Simplify right side
    21,862.24x = 389,424,488.85
  5. Step 5: Solve for x
    x = 389,424,488.85/21,862.24
  6. Step 6: Final answer
    x = 17,812.65

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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.