Home / 18,698,188.89-28,056,165.72-12,949,768.74

Finding the Fourth Proportional to 18,698,188.89, 28,056,165.72 and 12,949,768.74

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Solution

The fourth proportional to 18,698,188.89, 28,056,165.72 and 12,949,768.74 is: 19,430,804.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698,188.89 : 28,056,165.72 = 12,949,768.74 : x
  2. Step 2: Convert to fraction form
    18,698,188.89/28,056,165.72 = 12,949,768.74/x
  3. Step 3: Cross multiply
    18,698,188.89x = 28,056,165.72 × 12,949,768.74
  4. Step 4: Simplify right side
    18,698,188.89x = 363,320,857,805,115.56
  5. Step 5: Solve for x
    x = 363,320,857,805,115.56/18,698,188.89
  6. Step 6: Final answer
    x = 19,430,804.77

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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.