Finding the Fourth Proportional to 15,841,570.86, 21,857,619.30 and 8,966,053.14
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Solution
The fourth proportional to 15,841,570.86, 21,857,619.30 and 8,966,053.14 is: 12,371,031.75
Step by Step Solution
- Step 1: Write the proportion equation
15,841,570.86 : 21,857,619.30 = 8,966,053.14 : x - Step 2: Convert to fraction form
15,841,570.86/21,857,619.30 = 8,966,053.14/x - Step 3: Cross multiply
15,841,570.86x = 21,857,619.30 × 8,966,053.14 - Step 4: Simplify right side
15,841,570.86x = 195,976,576,157,689.62 - Step 5: Solve for x
x = 195,976,576,157,689.62/15,841,570.86 - Step 6: Final answer
x = 12,371,031.75
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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.