Home / 18,927,721.86-28,380,211.40-7,399,458.48

Finding the Fourth Proportional to 18,927,721.86, 28,380,211.40 and 7,399,458.48

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Solution

The fourth proportional to 18,927,721.86, 28,380,211.40 and 7,399,458.48 is: 11,094,742.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927,721.86 : 28,380,211.40 = 7,399,458.48 : x
  2. Step 2: Convert to fraction form
    18,927,721.86/28,380,211.40 = 7,399,458.48/x
  3. Step 3: Cross multiply
    18,927,721.86x = 28,380,211.40 × 7,399,458.48
  4. Step 4: Simplify right side
    18,927,721.86x = 209,998,195,907,922.69
  5. Step 5: Solve for x
    x = 209,998,195,907,922.69/18,927,721.86
  6. Step 6: Final answer
    x = 11,094,742.28

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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.