Finding the Fourth Proportional to 15,562,242.78, 21,472,112.79 and 9,122,470.62
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Solution
The fourth proportional to 15,562,242.78, 21,472,112.79 and 9,122,470.62 is: 12,586,792.33
Step by Step Solution
- Step 1: Write the proportion equation
15,562,242.78 : 21,472,112.79 = 9,122,470.62 : x - Step 2: Convert to fraction form
15,562,242.78/21,472,112.79 = 9,122,470.62/x - Step 3: Cross multiply
15,562,242.78x = 21,472,112.79 × 9,122,470.62 - Step 4: Simplify right side
15,562,242.78x = 195,878,718,076,101.22 - Step 5: Solve for x
x = 195,878,718,076,101.22/15,562,242.78 - Step 6: Final answer
x = 12,586,792.33
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1.5x scale
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.