Home / 19,181,431.20-28,724,907.60-9,072,242.40

Finding the Fourth Proportional to 19,181,431.20, 28,724,907.60 and 9,072,242.40

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Solution

The fourth proportional to 19,181,431.20, 28,724,907.60 and 9,072,242.40 is: 13,586,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181,431.20 : 28,724,907.60 = 9,072,242.40 : x
  2. Step 2: Convert to fraction form
    19,181,431.20/28,724,907.60 = 9,072,242.40/x
  3. Step 3: Cross multiply
    19,181,431.20x = 28,724,907.60 × 9,072,242.40
  4. Step 4: Simplify right side
    19,181,431.20x = 260,599,324,664,802.25
  5. Step 5: Solve for x
    x = 260,599,324,664,802.25/19,181,431.20
  6. Step 6: Final answer
    x = 13,586,020.87

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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.