Finding the Fourth Proportional to 15,136,072.09, 20,888,266.64 and 8,609,533.74
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Solution
The fourth proportional to 15,136,072.09, 20,888,266.64 and 8,609,533.74 is: 11,881,433.66
Step by Step Solution
- Step 1: Write the proportion equation
15,136,072.09 : 20,888,266.64 = 8,609,533.74 : x - Step 2: Convert to fraction form
15,136,072.09/20,888,266.64 = 8,609,533.74/x - Step 3: Cross multiply
15,136,072.09x = 20,888,266.64 × 8,609,533.74 - Step 4: Simplify right side
15,136,072.09x = 179,838,236,364,148.78 - Step 5: Solve for x
x = 179,838,236,364,148.78/15,136,072.09 - Step 6: Final answer
x = 11,881,433.66
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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.