Home / 28,190,712.80-42,290,005.80-12,016,535.60

Finding the Fourth Proportional to 28,190,712.80, 42,290,005.80 and 12,016,535.60

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Solution

The fourth proportional to 28,190,712.80, 42,290,005.80 and 12,016,535.60 is: 18,026,481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190,712.80 : 42,290,005.80 = 12,016,535.60 : x
  2. Step 2: Convert to fraction form
    28,190,712.80/42,290,005.80 = 12,016,535.60/x
  3. Step 3: Cross multiply
    28,190,712.80x = 42,290,005.80 × 12,016,535.60
  4. Step 4: Simplify right side
    28,190,712.80x = 508,179,360,219,906.44
  5. Step 5: Solve for x
    x = 508,179,360,219,906.44/28,190,712.80
  6. Step 6: Final answer
    x = 18,026,481.41

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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.