Home / 12,879,012.60-19,318,518.90-9,309,828.60

Finding the Fourth Proportional to 12,879,012.60, 19,318,518.90 and 9,309,828.60

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Solution

The fourth proportional to 12,879,012.60, 19,318,518.90 and 9,309,828.60 is: 13,964,742.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,012.60 : 19,318,518.90 = 9,309,828.60 : x
  2. Step 2: Convert to fraction form
    12,879,012.60/19,318,518.90 = 9,309,828.60/x
  3. Step 3: Cross multiply
    12,879,012.60x = 19,318,518.90 × 9,309,828.60
  4. Step 4: Simplify right side
    12,879,012.60x = 179,852,099,764,860.53
  5. Step 5: Solve for x
    x = 179,852,099,764,860.53/12,879,012.60
  6. Step 6: Final answer
    x = 13,964,742.90

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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.