Finding the Fourth Proportional to 13,268,686.52, 18,316,437.19 and 8,920,294.88
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Solution
The fourth proportional to 13,268,686.52, 18,316,437.19 and 8,920,294.88 is: 12,313,805.18
Step by Step Solution
- Step 1: Write the proportion equation
13,268,686.52 : 18,316,437.19 = 8,920,294.88 : x - Step 2: Convert to fraction form
13,268,686.52/18,316,437.19 = 8,920,294.88/x - Step 3: Cross multiply
13,268,686.52x = 18,316,437.19 × 8,920,294.88 - Step 4: Simplify right side
13,268,686.52x = 163,388,020,771,915.66 - Step 5: Solve for x
x = 163,388,020,771,915.66/13,268,686.52 - Step 6: Final answer
x = 12,313,805.18
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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.