Finding the Fourth Proportional to 19,981,946.88, 27,572,590.08 and 11,279,047.68
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Solution
The fourth proportional to 19,981,946.88, 27,572,590.08 and 11,279,047.68 is: 15,563,676.55
Step by Step Solution
- Step 1: Write the proportion equation
19,981,946.88 : 27,572,590.08 = 11,279,047.68 : x - Step 2: Convert to fraction form
19,981,946.88/27,572,590.08 = 11,279,047.68/x - Step 3: Cross multiply
19,981,946.88x = 27,572,590.08 × 11,279,047.68 - Step 4: Simplify right side
19,981,946.88x = 310,992,558,173,415 - Step 5: Solve for x
x = 310,992,558,173,415/19,981,946.88 - Step 6: Final answer
x = 15,563,676.55
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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.