Home / 12,539,976.40-18,809,964.60-10,626,788.80

Finding the Fourth Proportional to 12,539,976.40, 18,809,964.60 and 10,626,788.80

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Solution

The fourth proportional to 12,539,976.40, 18,809,964.60 and 10,626,788.80 is: 15,940,183.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539,976.40 : 18,809,964.60 = 10,626,788.80 : x
  2. Step 2: Convert to fraction form
    12,539,976.40/18,809,964.60 = 10,626,788.80/x
  3. Step 3: Cross multiply
    12,539,976.40x = 18,809,964.60 × 10,626,788.80
  4. Step 4: Simplify right side
    12,539,976.40x = 199,889,521,139,676.50
  5. Step 5: Solve for x
    x = 199,889,521,139,676.50/12,539,976.40
  6. Step 6: Final answer
    x = 15,940,183.20

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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.