Home / 20,528.37-30,790.94-12,631.95

Finding the Fourth Proportional to 20,528.37, 30,790.94 and 12,631.95

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Solution

The fourth proportional to 20,528.37, 30,790.94 and 12,631.95 is: 18,946.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.37 : 30,790.94 = 12,631.95 : x
  2. Step 2: Convert to fraction form
    20,528.37/30,790.94 = 12,631.95/x
  3. Step 3: Cross multiply
    20,528.37x = 30,790.94 × 12,631.95
  4. Step 4: Simplify right side
    20,528.37x = 388,949,460.58
  5. Step 5: Solve for x
    x = 388,949,460.58/20,528.37
  6. Step 6: Final answer
    x = 18,946.93

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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.