Finding the Fourth Proportional to 19,808,916.26, 27,326,243.85 and 12,937,420.58
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Solution
The fourth proportional to 19,808,916.26, 27,326,243.85 and 12,937,420.58 is: 17,847,069.72
Step by Step Solution
- Step 1: Write the proportion equation
19,808,916.26 : 27,326,243.85 = 12,937,420.58 : x - Step 2: Convert to fraction form
19,808,916.26/27,326,243.85 = 12,937,420.58/x - Step 3: Cross multiply
19,808,916.26x = 27,326,243.85 × 12,937,420.58 - Step 4: Simplify right side
19,808,916.26x = 353,531,109,559,088.44 - Step 5: Solve for x
x = 353,531,109,559,088.44/19,808,916.26 - Step 6: Final answer
x = 17,847,069.72
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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.