Home / 18,686,080.80-28,029,121.20-5,039,200.80

Finding the Fourth Proportional to 18,686,080.80, 28,029,121.20 and 5,039,200.80

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Solution

The fourth proportional to 18,686,080.80, 28,029,121.20 and 5,039,200.80 is: 7,558,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,080.80 : 28,029,121.20 = 5,039,200.80 : x
  2. Step 2: Convert to fraction form
    18,686,080.80/28,029,121.20 = 5,039,200.80/x
  3. Step 3: Cross multiply
    18,686,080.80x = 28,029,121.20 × 5,039,200.80
  4. Step 4: Simplify right side
    18,686,080.80x = 141,244,369,974,336.94
  5. Step 5: Solve for x
    x = 141,244,369,974,336.94/18,686,080.80
  6. Step 6: Final answer
    x = 7,558,801.20

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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.