Home / 18,774,128.66-28,173,039.48-7,991,412.32

Finding the Fourth Proportional to 18,774,128.66, 28,173,039.48 and 7,991,412.32

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Solution

The fourth proportional to 18,774,128.66, 28,173,039.48 and 7,991,412.32 is: 11,992,161.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774,128.66 : 28,173,039.48 = 7,991,412.32 : x
  2. Step 2: Convert to fraction form
    18,774,128.66/28,173,039.48 = 7,991,412.32/x
  3. Step 3: Cross multiply
    18,774,128.66x = 28,173,039.48 × 7,991,412.32
  4. Step 4: Simplify right side
    18,774,128.66x = 225,142,374,792,318.41
  5. Step 5: Solve for x
    x = 225,142,374,792,318.41/18,774,128.66
  6. Step 6: Final answer
    x = 11,992,161.07

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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.