Home / 18,913,007.70-28,369,511.55-11,260,257.30

Finding the Fourth Proportional to 18,913,007.70, 28,369,511.55 and 11,260,257.30

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Solution

The fourth proportional to 18,913,007.70, 28,369,511.55 and 11,260,257.30 is: 16,890,385.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913,007.70 : 28,369,511.55 = 11,260,257.30 : x
  2. Step 2: Convert to fraction form
    18,913,007.70/28,369,511.55 = 11,260,257.30/x
  3. Step 3: Cross multiply
    18,913,007.70x = 28,369,511.55 × 11,260,257.30
  4. Step 4: Simplify right side
    18,913,007.70x = 319,447,999,528,321.88
  5. Step 5: Solve for x
    x = 319,447,999,528,321.88/18,913,007.70
  6. Step 6: Final answer
    x = 16,890,385.95

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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.