Finding the Fourth Proportional to 18,139,287.68, 25,032,217.02 and 9,990,525.68
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Solution
The fourth proportional to 18,139,287.68, 25,032,217.02 and 9,990,525.68 is: 13,786,925.45
Step by Step Solution
- Step 1: Write the proportion equation
18,139,287.68 : 25,032,217.02 = 9,990,525.68 : x - Step 2: Convert to fraction form
18,139,287.68/25,032,217.02 = 9,990,525.68/x - Step 3: Cross multiply
18,139,287.68x = 25,032,217.02 × 9,990,525.68 - Step 4: Simplify right side
18,139,287.68x = 250,085,006,965,643.06 - Step 5: Solve for x
x = 250,085,006,965,643.06/18,139,287.68 - Step 6: Final answer
x = 13,786,925.45
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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.