Finding the Fourth Proportional to 13,691,260.88, 18,893,810.76 and 7,887,911.12
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Solution
The fourth proportional to 13,691,260.88, 18,893,810.76 and 7,887,911.12 is: 10,885,242.88
Step by Step Solution
- Step 1: Write the proportion equation
13,691,260.88 : 18,893,810.76 = 7,887,911.12 : x - Step 2: Convert to fraction form
13,691,260.88/18,893,810.76 = 7,887,911.12/x - Step 3: Cross multiply
13,691,260.88x = 18,893,810.76 × 7,887,911.12 - Step 4: Simplify right side
13,691,260.88x = 149,032,699,992,979.66 - Step 5: Solve for x
x = 149,032,699,992,979.66/13,691,260.88 - Step 6: Final answer
x = 10,885,242.88
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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.