Home / 18,787,998.60-28,165,595.40-7,281,316.80

Finding the Fourth Proportional to 18,787,998.60, 28,165,595.40 and 7,281,316.80

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Solution

The fourth proportional to 18,787,998.60, 28,165,595.40 and 7,281,316.80 is: 10,915,618.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787,998.60 : 28,165,595.40 = 7,281,316.80 : x
  2. Step 2: Convert to fraction form
    18,787,998.60/28,165,595.40 = 7,281,316.80/x
  3. Step 3: Cross multiply
    18,787,998.60x = 28,165,595.40 × 7,281,316.80
  4. Step 4: Simplify right side
    18,787,998.60x = 205,082,622,968,022.72
  5. Step 5: Solve for x
    x = 205,082,622,968,022.72/18,787,998.60
  6. Step 6: Final answer
    x = 10,915,618.39

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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.