Finding the Fourth Proportional to 18,138,276.24, 25,031,952.40 and 9,989,512.08
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Solution
The fourth proportional to 18,138,276.24, 25,031,952.40 and 9,989,512.08 is: 13,786,149.66
Step by Step Solution
- Step 1: Write the proportion equation
18,138,276.24 : 25,031,952.40 = 9,989,512.08 : x - Step 2: Convert to fraction form
18,138,276.24/25,031,952.40 = 9,989,512.08/x - Step 3: Cross multiply
18,138,276.24x = 25,031,952.40 × 9,989,512.08 - Step 4: Simplify right side
18,138,276.24x = 250,056,990,885,784.97 - Step 5: Solve for x
x = 250,056,990,885,784.97/18,138,276.24 - Step 6: Final answer
x = 13,786,149.66
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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.