Finding the Fourth Proportional to 12,778,531.84, 17,625,424.84 and 8,646,744.14
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Solution
The fourth proportional to 12,778,531.84, 17,625,424.84 and 8,646,744.14 is: 11,926,451.40
Step by Step Solution
- Step 1: Write the proportion equation
12,778,531.84 : 17,625,424.84 = 8,646,744.14 : x - Step 2: Convert to fraction form
12,778,531.84/17,625,424.84 = 8,646,744.14/x - Step 3: Cross multiply
12,778,531.84x = 17,625,424.84 × 8,646,744.14 - Step 4: Simplify right side
12,778,531.84x = 152,402,538,931,418.44 - Step 5: Solve for x
x = 152,402,538,931,418.44/12,778,531.84 - Step 6: Final answer
x = 11,926,451.40
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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.