Finding the Fourth Proportional to 13,576,880.05, 18,735,962.75 and 7,381,926.68
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Solution
The fourth proportional to 13,576,880.05, 18,735,962.75 and 7,381,926.68 is: 10,186,987.20
Step by Step Solution
- Step 1: Write the proportion equation
13,576,880.05 : 18,735,962.75 = 7,381,926.68 : x - Step 2: Convert to fraction form
13,576,880.05/18,735,962.75 = 7,381,926.68/x - Step 3: Cross multiply
13,576,880.05x = 18,735,962.75 × 7,381,926.68 - Step 4: Simplify right side
13,576,880.05x = 138,307,503,211,175.89 - Step 5: Solve for x
x = 138,307,503,211,175.89/13,576,880.05 - Step 6: Final answer
x = 10,186,987.20
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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.