Finding the Fourth Proportional to 15,840,138.74, 21,859,400.43 and 8,596,794.74
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Solution
The fourth proportional to 15,840,138.74, 21,859,400.43 and 8,596,794.74 is: 11,863,581.61
Step by Step Solution
- Step 1: Write the proportion equation
15,840,138.74 : 21,859,400.43 = 8,596,794.74 : x - Step 2: Convert to fraction form
15,840,138.74/21,859,400.43 = 8,596,794.74/x - Step 3: Cross multiply
15,840,138.74x = 21,859,400.43 × 8,596,794.74 - Step 4: Simplify right side
15,840,138.74x = 187,920,778,636,177.75 - Step 5: Solve for x
x = 187,920,778,636,177.75/15,840,138.74 - Step 6: Final answer
x = 11,863,581.61
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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.