Finding the Fourth Proportional to 19,538,623.29, 26,945,656.20 and 12,197,137.68
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Solution
The fourth proportional to 19,538,623.29, 26,945,656.20 and 12,197,137.68 is: 16,821,035.63
Step by Step Solution
- Step 1: Write the proportion equation
19,538,623.29 : 26,945,656.20 = 12,197,137.68 : x - Step 2: Convert to fraction form
19,538,623.29/26,945,656.20 = 12,197,137.68/x - Step 3: Cross multiply
19,538,623.29x = 26,945,656.20 × 12,197,137.68 - Step 4: Simplify right side
19,538,623.29x = 328,659,878,549,345.62 - Step 5: Solve for x
x = 328,659,878,549,345.62/19,538,623.29 - Step 6: Final answer
x = 16,821,035.63
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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.