Home / 18,981,007.80-28,471,511.70-12,523,999.65

Finding the Fourth Proportional to 18,981,007.80, 28,471,511.70 and 12,523,999.65

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Solution

The fourth proportional to 18,981,007.80, 28,471,511.70 and 12,523,999.65 is: 18,785,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,007.80 : 28,471,511.70 = 12,523,999.65 : x
  2. Step 2: Convert to fraction form
    18,981,007.80/28,471,511.70 = 12,523,999.65/x
  3. Step 3: Cross multiply
    18,981,007.80x = 28,471,511.70 × 12,523,999.65
  4. Step 4: Simplify right side
    18,981,007.80x = 356,577,202,565,770.94
  5. Step 5: Solve for x
    x = 356,577,202,565,770.94/18,981,007.80
  6. Step 6: Final answer
    x = 18,785,999.48

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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.