Home / 20,071.80-30,095.70-12,286.20

Finding the Fourth Proportional to 20,071.80, 30,095.70 and 12,286.20

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Solution

The fourth proportional to 20,071.80, 30,095.70 and 12,286.20 is: 18,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.80 : 30,095.70 = 12,286.20 : x
  2. Step 2: Convert to fraction form
    20,071.80/30,095.70 = 12,286.20/x
  3. Step 3: Cross multiply
    20,071.80x = 30,095.70 × 12,286.20
  4. Step 4: Simplify right side
    20,071.80x = 369,761,789.34
  5. Step 5: Solve for x
    x = 369,761,789.34/20,071.80
  6. Step 6: Final answer
    x = 18,421.95

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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.