Finding the Fourth Proportional to 13,065,418.19, 18,031,286.87 and 7,838,623.05
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Solution
The fourth proportional to 13,065,418.19, 18,031,286.87 and 7,838,623.05 is: 10,817,905.62
Step by Step Solution
- Step 1: Write the proportion equation
13,065,418.19 : 18,031,286.87 = 7,838,623.05 : x - Step 2: Convert to fraction form
13,065,418.19/18,031,286.87 = 7,838,623.05/x - Step 3: Cross multiply
13,065,418.19x = 18,031,286.87 × 7,838,623.05 - Step 4: Simplify right side
13,065,418.19x = 141,340,460,841,151.22 - Step 5: Solve for x
x = 141,340,460,841,151.22/13,065,418.19 - Step 6: Final answer
x = 10,817,905.62
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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.