Finding the Fourth Proportional to 19,888,271.20, 29,832,406.80 and 10,306,586.80
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Solution
The fourth proportional to 19,888,271.20, 29,832,406.80 and 10,306,586.80 is: 15,459,880.20
Step by Step Solution
- Step 1: Write the proportion equation
19,888,271.20 : 29,832,406.80 = 10,306,586.80 : x - Step 2: Convert to fraction form
19,888,271.20/29,832,406.80 = 10,306,586.80/x - Step 3: Cross multiply
19,888,271.20x = 29,832,406.80 × 10,306,586.80 - Step 4: Simplify right side
19,888,271.20x = 307,470,290,137,110.25 - Step 5: Solve for x
x = 307,470,290,137,110.25/19,888,271.20 - Step 6: Final answer
x = 15,459,880.20
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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.