Finding the Fourth Proportional to 18,197,680.47, 27,288,931.78 and 7,407,656.70
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Solution
The fourth proportional to 18,197,680.47, 27,288,931.78 and 7,407,656.70 is: 11,108,395.86
Step by Step Solution
- Step 1: Write the proportion equation
18,197,680.47 : 27,288,931.78 = 7,407,656.70 : x - Step 2: Convert to fraction form
18,197,680.47/27,288,931.78 = 7,407,656.70/x - Step 3: Cross multiply
18,197,680.47x = 27,288,931.78 × 7,407,656.70 - Step 4: Simplify right side
18,197,680.47x = 202,147,038,335,959.94 - Step 5: Solve for x
x = 202,147,038,335,959.94/18,197,680.47 - Step 6: Final answer
x = 11,108,395.86
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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.