Finding the Fourth Proportional to 11,478,377.84, 15,838,989.20 and 7,067,402.96
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Solution
The fourth proportional to 11,478,377.84, 15,838,989.20 and 7,067,402.96 is: 9,752,294.33
Step by Step Solution
- Step 1: Write the proportion equation
11,478,377.84 : 15,838,989.20 = 7,067,402.96 : x - Step 2: Convert to fraction form
11,478,377.84/15,838,989.20 = 7,067,402.96/x - Step 3: Cross multiply
11,478,377.84x = 15,838,989.20 × 7,067,402.96 - Step 4: Simplify right side
11,478,377.84x = 111,940,519,155,488.03 - Step 5: Solve for x
x = 111,940,519,155,488.03/11,478,377.84 - Step 6: Final answer
x = 9,752,294.33
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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.