Finding the Fourth Proportional to 21,602,274.80, 32,403,412.20 and 19,959,983.60
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Solution
The fourth proportional to 21,602,274.80, 32,403,412.20 and 19,959,983.60 is: 29,939,975.40
Step by Step Solution
- Step 1: Write the proportion equation
21,602,274.80 : 32,403,412.20 = 19,959,983.60 : x - Step 2: Convert to fraction form
21,602,274.80/32,403,412.20 = 19,959,983.60/x - Step 3: Cross multiply
21,602,274.80x = 32,403,412.20 × 19,959,983.60 - Step 4: Simplify right side
21,602,274.80x = 646,771,576,096,040 - Step 5: Solve for x
x = 646,771,576,096,040/21,602,274.80 - Step 6: Final answer
x = 29,939,975.40
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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.