Finding the Fourth Proportional to 13,291,642.14, 18,345,878.70 and 8,656,976.04
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Solution
The fourth proportional to 13,291,642.14, 18,345,878.70 and 8,656,976.04 is: 11,948,849.56
Step by Step Solution
- Step 1: Write the proportion equation
13,291,642.14 : 18,345,878.70 = 8,656,976.04 : x - Step 2: Convert to fraction form
13,291,642.14/18,345,878.70 = 8,656,976.04/x - Step 3: Cross multiply
13,291,642.14x = 18,345,878.70 × 8,656,976.04 - Step 4: Simplify right side
13,291,642.14x = 158,819,832,338,646.31 - Step 5: Solve for x
x = 158,819,832,338,646.31/13,291,642.14 - Step 6: Final answer
x = 11,948,849.56
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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.