Home / 20,362,997.72-28,099,264.42-11,989,036.28

Finding the Fourth Proportional to 20,362,997.72, 28,099,264.42 and 11,989,036.28

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Solution

The fourth proportional to 20,362,997.72, 28,099,264.42 and 11,989,036.28 is: 16,543,885.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362,997.72 : 28,099,264.42 = 11,989,036.28 : x
  2. Step 2: Convert to fraction form
    20,362,997.72/28,099,264.42 = 11,989,036.28/x
  3. Step 3: Cross multiply
    20,362,997.72x = 28,099,264.42 × 11,989,036.28
  4. Step 4: Simplify right side
    20,362,997.72x = 336,883,100,572,693.19
  5. Step 5: Solve for x
    x = 336,883,100,572,693.19/20,362,997.72
  6. Step 6: Final answer
    x = 16,543,885.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.