Home / 12,103,221.40-18,138,891.30-8,893,288.60

Finding the Fourth Proportional to 12,103,221.40, 18,138,891.30 and 8,893,288.60

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Solution

The fourth proportional to 12,103,221.40, 18,138,891.30 and 8,893,288.60 is: 13,328,219.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103,221.40 : 18,138,891.30 = 8,893,288.60 : x
  2. Step 2: Convert to fraction form
    12,103,221.40/18,138,891.30 = 8,893,288.60/x
  3. Step 3: Cross multiply
    12,103,221.40x = 18,138,891.30 × 8,893,288.60
  4. Step 4: Simplify right side
    12,103,221.40x = 161,314,395,214,929.19
  5. Step 5: Solve for x
    x = 161,314,395,214,929.19/12,103,221.40
  6. Step 6: Final answer
    x = 13,328,219.81

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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.