Home / 13,181,878.20-19,739,639.70-8,669,724.60

Finding the Fourth Proportional to 13,181,878.20, 19,739,639.70 and 8,669,724.60

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Solution

The fourth proportional to 13,181,878.20, 19,739,639.70 and 8,669,724.60 is: 12,982,765.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181,878.20 : 19,739,639.70 = 8,669,724.60 : x
  2. Step 2: Convert to fraction form
    13,181,878.20/19,739,639.70 = 8,669,724.60/x
  3. Step 3: Cross multiply
    13,181,878.20x = 19,739,639.70 × 8,669,724.60
  4. Step 4: Simplify right side
    13,181,878.20x = 171,137,239,902,226.59
  5. Step 5: Solve for x
    x = 171,137,239,902,226.59/13,181,878.20
  6. Step 6: Final answer
    x = 12,982,765.98

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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.