Finding the Fourth Proportional to 21,727,979.92, 29,973,369.36 and 14,759,016.94
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Solution
The fourth proportional to 21,727,979.92, 29,973,369.36 and 14,759,016.94 is: 20,359,806.47
Step by Step Solution
- Step 1: Write the proportion equation
21,727,979.92 : 29,973,369.36 = 14,759,016.94 : x - Step 2: Convert to fraction form
21,727,979.92/29,973,369.36 = 14,759,016.94/x - Step 3: Cross multiply
21,727,979.92x = 29,973,369.36 × 14,759,016.94 - Step 4: Simplify right side
21,727,979.92x = 442,377,466,133,116.94 - Step 5: Solve for x
x = 442,377,466,133,116.94/21,727,979.92 - Step 6: Final answer
x = 20,359,806.47
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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.