Finding the Fourth Proportional to 13,280,486.44, 18,326,587.26 and 7,399,816.78
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Solution
The fourth proportional to 13,280,486.44, 18,326,587.26 and 7,399,816.78 is: 10,211,477.46
Step by Step Solution
- Step 1: Write the proportion equation
13,280,486.44 : 18,326,587.26 = 7,399,816.78 : x - Step 2: Convert to fraction form
13,280,486.44/18,326,587.26 = 7,399,816.78/x - Step 3: Cross multiply
13,280,486.44x = 18,326,587.26 × 7,399,816.78 - Step 4: Simplify right side
13,280,486.44x = 135,613,387,926,682.23 - Step 5: Solve for x
x = 135,613,387,926,682.23/13,280,486.44 - Step 6: Final answer
x = 10,211,477.46
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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.