Home / 20,665,372.98-28,522,162.92-13,683,736.32

Finding the Fourth Proportional to 20,665,372.98, 28,522,162.92 and 13,683,736.32

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Solution

The fourth proportional to 20,665,372.98, 28,522,162.92 and 13,683,736.32 is: 18,886,170.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665,372.98 : 28,522,162.92 = 13,683,736.32 : x
  2. Step 2: Convert to fraction form
    20,665,372.98/28,522,162.92 = 13,683,736.32/x
  3. Step 3: Cross multiply
    20,665,372.98x = 28,522,162.92 × 13,683,736.32
  4. Step 4: Simplify right side
    20,665,372.98x = 390,289,756,673,361.31
  5. Step 5: Solve for x
    x = 390,289,756,673,361.31/20,665,372.98
  6. Step 6: Final answer
    x = 18,886,170.46

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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.