Finding the Fourth Proportional to 13,268,679.65, 18,316,427.70 and 8,920,288
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Solution
The fourth proportional to 13,268,679.65, 18,316,427.70 and 8,920,288 is: 12,313,795.68
Step by Step Solution
- Step 1: Write the proportion equation
13,268,679.65 : 18,316,427.70 = 8,920,288 : x - Step 2: Convert to fraction form
13,268,679.65/18,316,427.70 = 8,920,288/x - Step 3: Cross multiply
13,268,679.65x = 18,316,427.70 × 8,920,288 - Step 4: Simplify right side
13,268,679.65x = 163,387,810,215,177.59 - Step 5: Solve for x
x = 163,387,810,215,177.59/13,268,679.65 - Step 6: Final answer
x = 12,313,795.68
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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.