Finding the Fourth Proportional to 12,997,691.51, 17,937,374.65 and 7,196,473.08
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Solution
The fourth proportional to 12,997,691.51, 17,937,374.65 and 7,196,473.08 is: 9,931,443.11
Step by Step Solution
- Step 1: Write the proportion equation
12,997,691.51 : 17,937,374.65 = 7,196,473.08 : x - Step 2: Convert to fraction form
12,997,691.51/17,937,374.65 = 7,196,473.08/x - Step 3: Cross multiply
12,997,691.51x = 17,937,374.65 × 7,196,473.08 - Step 4: Simplify right side
12,997,691.51x = 129,085,833,776,608.25 - Step 5: Solve for x
x = 129,085,833,776,608.25/12,997,691.51 - Step 6: Final answer
x = 9,931,443.11
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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.