Finding the Fourth Proportional to 20,495,629.69, 28,283,966.93 and 11,203,237.09
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Solution
The fourth proportional to 20,495,629.69, 28,283,966.93 and 11,203,237.09 is: 15,460,466.07
Step by Step Solution
- Step 1: Write the proportion equation
20,495,629.69 : 28,283,966.93 = 11,203,237.09 : x - Step 2: Convert to fraction form
20,495,629.69/28,283,966.93 = 11,203,237.09/x - Step 3: Cross multiply
20,495,629.69x = 28,283,966.93 × 11,203,237.09 - Step 4: Simplify right side
20,495,629.69x = 316,871,987,425,872.50 - Step 5: Solve for x
x = 316,871,987,425,872.50/20,495,629.69 - Step 6: Final answer
x = 15,460,466.07
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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.