Home / 18,915,135.19-28,372,730.12-5,268,320.80

Finding the Fourth Proportional to 18,915,135.19, 28,372,730.12 and 5,268,320.80

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Solution

The fourth proportional to 18,915,135.19, 28,372,730.12 and 5,268,320.80 is: 7,902,488.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915,135.19 : 28,372,730.12 = 5,268,320.80 : x
  2. Step 2: Convert to fraction form
    18,915,135.19/28,372,730.12 = 5,268,320.80/x
  3. Step 3: Cross multiply
    18,915,135.19x = 28,372,730.12 × 5,268,320.80
  4. Step 4: Simplify right side
    18,915,135.19x = 149,476,644,166,465.28
  5. Step 5: Solve for x
    x = 149,476,644,166,465.28/18,915,135.19
  6. Step 6: Final answer
    x = 7,902,488.81

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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.