Finding the Fourth Proportional to 19,661,092.16, 27,109,831.20 and 15,979,933.76
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Solution
The fourth proportional to 19,661,092.16, 27,109,831.20 and 15,979,933.76 is: 22,034,040.80
Step by Step Solution
- Step 1: Write the proportion equation
19,661,092.16 : 27,109,831.20 = 15,979,933.76 : x - Step 2: Convert to fraction form
19,661,092.16/27,109,831.20 = 15,979,933.76/x - Step 3: Cross multiply
19,661,092.16x = 27,109,831.20 × 15,979,933.76 - Step 4: Simplify right side
19,661,092.16x = 433,213,306,820,781.31 - Step 5: Solve for x
x = 433,213,306,820,781.31/19,661,092.16 - Step 6: Final answer
x = 22,034,040.80
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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.