Home / 12,879,784.40-19,319,676.60-8,344,821.20

Finding the Fourth Proportional to 12,879,784.40, 19,319,676.60 and 8,344,821.20

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Solution

The fourth proportional to 12,879,784.40, 19,319,676.60 and 8,344,821.20 is: 12,517,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,784.40 : 19,319,676.60 = 8,344,821.20 : x
  2. Step 2: Convert to fraction form
    12,879,784.40/19,319,676.60 = 8,344,821.20/x
  3. Step 3: Cross multiply
    12,879,784.40x = 19,319,676.60 × 8,344,821.20
  4. Step 4: Simplify right side
    12,879,784.40x = 161,219,246,868,823.94
  5. Step 5: Solve for x
    x = 161,219,246,868,823.94/12,879,784.40
  6. Step 6: Final answer
    x = 12,517,231.80

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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.