Home / 12,621,860.40-18,945,232.20-6,239,319.60

Finding the Fourth Proportional to 12,621,860.40, 18,945,232.20 and 6,239,319.60

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Solution

The fourth proportional to 12,621,860.40, 18,945,232.20 and 6,239,319.60 is: 9,365,129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621,860.40 : 18,945,232.20 = 6,239,319.60 : x
  2. Step 2: Convert to fraction form
    12,621,860.40/18,945,232.20 = 6,239,319.60/x
  3. Step 3: Cross multiply
    12,621,860.40x = 18,945,232.20 × 6,239,319.60
  4. Step 4: Simplify right side
    12,621,860.40x = 118,205,358,592,011.11
  5. Step 5: Solve for x
    x = 118,205,358,592,011.11/12,621,860.40
  6. Step 6: Final answer
    x = 9,365,129.61

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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.