Finding the Fourth Proportional to 12,973,692.44, 17,902,926.11 and 7,172,128.19
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Solution
The fourth proportional to 12,973,692.44, 17,902,926.11 and 7,172,128.19 is: 9,897,111.52
Step by Step Solution
- Step 1: Write the proportion equation
12,973,692.44 : 17,902,926.11 = 7,172,128.19 : x - Step 2: Convert to fraction form
12,973,692.44/17,902,926.11 = 7,172,128.19/x - Step 3: Cross multiply
12,973,692.44x = 17,902,926.11 × 7,172,128.19 - Step 4: Simplify right side
12,973,692.44x = 128,402,080,911,642.77 - Step 5: Solve for x
x = 128,402,080,911,642.77/12,973,692.44 - Step 6: Final answer
x = 9,897,111.52
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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.