Finding the Fourth Proportional to 13,129,317.51, 18,117,721.06 and 7,328,473.21
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Solution
The fourth proportional to 13,129,317.51, 18,117,721.06 and 7,328,473.21 is: 10,112,881.60
Step by Step Solution
- Step 1: Write the proportion equation
13,129,317.51 : 18,117,721.06 = 7,328,473.21 : x - Step 2: Convert to fraction form
13,129,317.51/18,117,721.06 = 7,328,473.21/x - Step 3: Cross multiply
13,129,317.51x = 18,117,721.06 × 7,328,473.21 - Step 4: Simplify right side
13,129,317.51x = 132,775,233,414,462.80 - Step 5: Solve for x
x = 132,775,233,414,462.80/13,129,317.51 - Step 6: Final answer
x = 10,112,881.60
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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.