Finding the Fourth Proportional to 28,188,727.14, 38,905,898.98 and 18,382,146.02
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Solution
The fourth proportional to 28,188,727.14, 38,905,898.98 and 18,382,146.02 is: 25,370,919.11
Step by Step Solution
- Step 1: Write the proportion equation
28,188,727.14 : 38,905,898.98 = 18,382,146.02 : x - Step 2: Convert to fraction form
28,188,727.14/38,905,898.98 = 18,382,146.02/x - Step 3: Cross multiply
28,188,727.14x = 38,905,898.98 × 18,382,146.02 - Step 4: Simplify right side
28,188,727.14x = 715,173,916,089,729 - Step 5: Solve for x
x = 715,173,916,089,729/28,188,727.14 - Step 6: Final answer
x = 25,370,919.11
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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.