Finding the Fourth Proportional to 10,521,780.80, 15,770,865.94 and 6,885,506.94
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Solution
The fourth proportional to 10,521,780.80, 15,770,865.94 and 6,885,506.94 is: 10,320,534.99
Step by Step Solution
- Step 1: Write the proportion equation
10,521,780.80 : 15,770,865.94 = 6,885,506.94 : x - Step 2: Convert to fraction form
10,521,780.80/15,770,865.94 = 6,885,506.94/x - Step 3: Cross multiply
10,521,780.80x = 15,770,865.94 × 6,885,506.94 - Step 4: Simplify right side
10,521,780.80x = 108,590,406,879,679.62 - Step 5: Solve for x
x = 108,590,406,879,679.62/10,521,780.80 - Step 6: Final answer
x = 10,320,534.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.