Finding the Fourth Proportional to 38,021,996.16, 52,473,128.64 and 21,724,122.24
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Solution
The fourth proportional to 38,021,996.16, 52,473,128.64 and 21,724,122.24 is: 29,980,873.60
Step by Step Solution
- Step 1: Write the proportion equation
38,021,996.16 : 52,473,128.64 = 21,724,122.24 : x - Step 2: Convert to fraction form
38,021,996.16/52,473,128.64 = 21,724,122.24/x - Step 3: Cross multiply
38,021,996.16x = 52,473,128.64 × 21,724,122.24 - Step 4: Simplify right side
38,021,996.16x = 1,139,932,660,890,605 - Step 5: Solve for x
x = 1,139,932,660,890,605/38,021,996.16 - Step 6: Final answer
x = 29,980,873.60
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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.