Home / 18,981,075.67-28,517,034.96-12,170,991.35

Finding the Fourth Proportional to 18,981,075.67, 28,517,034.96 and 12,170,991.35

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Solution

The fourth proportional to 18,981,075.67, 28,517,034.96 and 12,170,991.35 is: 18,285,612.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,075.67 : 28,517,034.96 = 12,170,991.35 : x
  2. Step 2: Convert to fraction form
    18,981,075.67/28,517,034.96 = 12,170,991.35/x
  3. Step 3: Cross multiply
    18,981,075.67x = 28,517,034.96 × 12,170,991.35
  4. Step 4: Simplify right side
    18,981,075.67x = 347,080,585,897,100.19
  5. Step 5: Solve for x
    x = 347,080,585,897,100.19/18,981,075.67
  6. Step 6: Final answer
    x = 18,285,612.05

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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.