Home / 12,483,778.20-18,739,664.10-9,656,424.60

Finding the Fourth Proportional to 12,483,778.20, 18,739,664.10 and 9,656,424.60

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Solution

The fourth proportional to 12,483,778.20, 18,739,664.10 and 9,656,424.60 is: 14,495,463.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483,778.20 : 18,739,664.10 = 9,656,424.60 : x
  2. Step 2: Convert to fraction form
    12,483,778.20/18,739,664.10 = 9,656,424.60/x
  3. Step 3: Cross multiply
    12,483,778.20x = 18,739,664.10 × 9,656,424.60
  4. Step 4: Simplify right side
    12,483,778.20x = 180,958,153,410,976.88
  5. Step 5: Solve for x
    x = 180,958,153,410,976.88/12,483,778.20
  6. Step 6: Final answer
    x = 14,495,463.67

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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.