Finding the Fourth Proportional to 18,120,624.96, 25,006,466.40 and 9,971,862.88
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Solution
The fourth proportional to 18,120,624.96, 25,006,466.40 and 9,971,862.88 is: 13,761,172.95
Step by Step Solution
- Step 1: Write the proportion equation
18,120,624.96 : 25,006,466.40 = 9,971,862.88 : x - Step 2: Convert to fraction form
18,120,624.96/25,006,466.40 = 9,971,862.88/x - Step 3: Cross multiply
18,120,624.96x = 25,006,466.40 × 9,971,862.88 - Step 4: Simplify right side
18,120,624.96x = 249,361,054,054,127.25 - Step 5: Solve for x
x = 249,361,054,054,127.25/18,120,624.96 - Step 6: Final answer
x = 13,761,172.95
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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.