Finding the Fourth Proportional to 13,324,511.43, 18,387,952.55 and 7,817,979.98
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Solution
The fourth proportional to 13,324,511.43, 18,387,952.55 and 7,817,979.98 is: 10,788,886.75
Step by Step Solution
- Step 1: Write the proportion equation
13,324,511.43 : 18,387,952.55 = 7,817,979.98 : x - Step 2: Convert to fraction form
13,324,511.43/18,387,952.55 = 7,817,979.98/x - Step 3: Cross multiply
13,324,511.43x = 18,387,952.55 × 7,817,979.98 - Step 4: Simplify right side
13,324,511.43x = 143,756,644,778,060.28 - Step 5: Solve for x
x = 143,756,644,778,060.28/13,324,511.43 - Step 6: Final answer
x = 10,788,886.75
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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.