Finding the Fourth Proportional to 15,267,981.12, 21,069,577.80 and 8,392,315.44
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Solution
The fourth proportional to 15,267,981.12, 21,069,577.80 and 8,392,315.44 is: 11,581,265.51
Step by Step Solution
- Step 1: Write the proportion equation
15,267,981.12 : 21,069,577.80 = 8,392,315.44 : x - Step 2: Convert to fraction form
15,267,981.12/21,069,577.80 = 8,392,315.44/x - Step 3: Cross multiply
15,267,981.12x = 21,069,577.80 × 8,392,315.44 - Step 4: Simplify right side
15,267,981.12x = 176,822,543,085,221.22 - Step 5: Solve for x
x = 176,822,543,085,221.22/15,267,981.12 - Step 6: Final answer
x = 11,581,265.51
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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.