Finding the Fourth Proportional to 28,161,755.84, 38,856,562.08 and 15,938,612.84
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Solution
The fourth proportional to 28,161,755.84, 38,856,562.08 and 15,938,612.84 is: 21,991,515.83
Step by Step Solution
- Step 1: Write the proportion equation
28,161,755.84 : 38,856,562.08 = 15,938,612.84 : x - Step 2: Convert to fraction form
28,161,755.84/38,856,562.08 = 15,938,612.84/x - Step 3: Cross multiply
28,161,755.84x = 38,856,562.08 × 15,938,612.84 - Step 4: Simplify right side
28,161,755.84x = 619,319,699,286,545.12 - Step 5: Solve for x
x = 619,319,699,286,545.12/28,161,755.84 - Step 6: Final answer
x = 21,991,515.83
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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.