Finding the Fourth Proportional to 19,729,286.40, 29,593,929.60 and 10,131,283.20
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Solution
The fourth proportional to 19,729,286.40, 29,593,929.60 and 10,131,283.20 is: 15,196,924.80
Step by Step Solution
- Step 1: Write the proportion equation
19,729,286.40 : 29,593,929.60 = 10,131,283.20 : x - Step 2: Convert to fraction form
19,729,286.40/29,593,929.60 = 10,131,283.20/x - Step 3: Cross multiply
19,729,286.40x = 29,593,929.60 × 10,131,283.20 - Step 4: Simplify right side
19,729,286.40x = 299,824,481,778,462.69 - Step 5: Solve for x
x = 299,824,481,778,462.69/19,729,286.40 - Step 6: Final answer
x = 15,196,924.80
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1.5x scale
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.