Finding the Fourth Proportional to 13,656,449.98, 18,845,921.26 and 7,776,088.96
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Solution
The fourth proportional to 13,656,449.98, 18,845,921.26 and 7,776,088.96 is: 10,731,014.32
Step by Step Solution
- Step 1: Write the proportion equation
13,656,449.98 : 18,845,921.26 = 7,776,088.96 : x - Step 2: Convert to fraction form
13,656,449.98/18,845,921.26 = 7,776,088.96/x - Step 3: Cross multiply
13,656,449.98x = 18,845,921.26 × 7,776,088.96 - Step 4: Simplify right side
13,656,449.98x = 146,547,560,250,915.31 - Step 5: Solve for x
x = 146,547,560,250,915.31/13,656,449.98 - Step 6: Final answer
x = 10,731,014.32
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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.