Finding the Fourth Proportional to 13,031,990.91, 17,920,374.37 and 11,310,122.07
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Solution
The fourth proportional to 13,031,990.91, 17,920,374.37 and 11,310,122.07 is: 15,552,621.47
Step by Step Solution
- Step 1: Write the proportion equation
13,031,990.91 : 17,920,374.37 = 11,310,122.07 : x - Step 2: Convert to fraction form
13,031,990.91/17,920,374.37 = 11,310,122.07/x - Step 3: Cross multiply
13,031,990.91x = 17,920,374.37 × 11,310,122.07 - Step 4: Simplify right side
13,031,990.91x = 202,681,621,664,799.38 - Step 5: Solve for x
x = 202,681,621,664,799.38/13,031,990.91 - Step 6: Final answer
x = 15,552,621.47
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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.