Finding the Fourth Proportional to 19,929,129.60, 29,892,139.20 and 7,796,236.80
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Solution
The fourth proportional to 19,929,129.60, 29,892,139.20 and 7,796,236.80 is: 11,693,746.81
Step by Step Solution
- Step 1: Write the proportion equation
19,929,129.60 : 29,892,139.20 = 7,796,236.80 : x - Step 2: Convert to fraction form
19,929,129.60/29,892,139.20 = 7,796,236.80/x - Step 3: Cross multiply
19,929,129.60x = 29,892,139.20 × 7,796,236.80 - Step 4: Simplify right side
19,929,129.60x = 233,046,195,661,762.56 - Step 5: Solve for x
x = 233,046,195,661,762.56/19,929,129.60 - Step 6: Final answer
x = 11,693,746.81
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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.