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Finding the Fourth Proportional to 18,968,866.92, 28,454,567.22 and 6,671,354.58

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Solution

The fourth proportional to 18,968,866.92, 28,454,567.22 and 6,671,354.58 is: 10,007,477.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968,866.92 : 28,454,567.22 = 6,671,354.58 : x
  2. Step 2: Convert to fraction form
    18,968,866.92/28,454,567.22 = 6,671,354.58/x
  3. Step 3: Cross multiply
    18,968,866.92x = 28,454,567.22 × 6,671,354.58
  4. Step 4: Simplify right side
    18,968,866.92x = 189,830,507,345,064.88
  5. Step 5: Solve for x
    x = 189,830,507,345,064.88/18,968,866.92
  6. Step 6: Final answer
    x = 10,007,477.42

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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.