Home / 22,143.07-30,555.90-12,453.98

Finding the Fourth Proportional to 22,143.07, 30,555.90 and 12,453.98

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Solution

The fourth proportional to 22,143.07, 30,555.90 and 12,453.98 is: 17,185.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,143.07 : 30,555.90 = 12,453.98 : x
  2. Step 2: Convert to fraction form
    22,143.07/30,555.90 = 12,453.98/x
  3. Step 3: Cross multiply
    22,143.07x = 30,555.90 × 12,453.98
  4. Step 4: Simplify right side
    22,143.07x = 380,542,414.70
  5. Step 5: Solve for x
    x = 380,542,414.70/22,143.07
  6. Step 6: Final answer
    x = 17,185.62

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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.