Finding the Fourth Proportional to 21,220,351.96, 31,817,492.46 and 8,251,385.49
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Solution
The fourth proportional to 21,220,351.96, 31,817,492.46 and 8,251,385.49 is: 12,372,009.48
Step by Step Solution
- Step 1: Write the proportion equation
21,220,351.96 : 31,817,492.46 = 8,251,385.49 : x - Step 2: Convert to fraction form
21,220,351.96/31,817,492.46 = 8,251,385.49/x - Step 3: Cross multiply
21,220,351.96x = 31,817,492.46 × 8,251,385.49 - Step 4: Simplify right side
21,220,351.96x = 262,538,395,513,941.25 - Step 5: Solve for x
x = 262,538,395,513,941.25/21,220,351.96 - Step 6: Final answer
x = 12,372,009.48
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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.