Finding the Fourth Proportional to 14,995,696.12, 20,694,159.18 and 8,120,178.76
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Solution
The fourth proportional to 14,995,696.12, 20,694,159.18 and 8,120,178.76 is: 11,205,900.05
Step by Step Solution
- Step 1: Write the proportion equation
14,995,696.12 : 20,694,159.18 = 8,120,178.76 : x - Step 2: Convert to fraction form
14,995,696.12/20,694,159.18 = 8,120,178.76/x - Step 3: Cross multiply
14,995,696.12x = 20,694,159.18 × 8,120,178.76 - Step 4: Simplify right side
14,995,696.12x = 168,040,271,829,495 - Step 5: Solve for x
x = 168,040,271,829,495/14,995,696.12 - Step 6: Final answer
x = 11,205,900.05
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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.