Home / 18,143,387.80-27,215,081.70-13,608,424.60

Finding the Fourth Proportional to 18,143,387.80, 27,215,081.70 and 13,608,424.60

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Solution

The fourth proportional to 18,143,387.80, 27,215,081.70 and 13,608,424.60 is: 20,412,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143,387.80 : 27,215,081.70 = 13,608,424.60 : x
  2. Step 2: Convert to fraction form
    18,143,387.80/27,215,081.70 = 13,608,424.60/x
  3. Step 3: Cross multiply
    18,143,387.80x = 27,215,081.70 × 13,608,424.60
  4. Step 4: Simplify right side
    18,143,387.80x = 370,354,387,297,289.81
  5. Step 5: Solve for x
    x = 370,354,387,297,289.81/18,143,387.80
  6. Step 6: Final answer
    x = 20,412,636.90

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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.