Home / 20,137.95-30,208.74-8,288.97

Finding the Fourth Proportional to 20,137.95, 30,208.74 and 8,288.97

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Solution

The fourth proportional to 20,137.95, 30,208.74 and 8,288.97 is: 12,434.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.95 : 30,208.74 = 8,288.97 : x
  2. Step 2: Convert to fraction form
    20,137.95/30,208.74 = 8,288.97/x
  3. Step 3: Cross multiply
    20,137.95x = 30,208.74 × 8,288.97
  4. Step 4: Simplify right side
    20,137.95x = 250,399,339.60
  5. Step 5: Solve for x
    x = 250,399,339.60/20,137.95
  6. Step 6: Final answer
    x = 12,434.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.