Finding the Fourth Proportional to 28,952,359.80, 39,963,213.27 and 18,639,074.69
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Solution
The fourth proportional to 28,952,359.80, 39,963,213.27 and 18,639,074.69 is: 25,727,689.28
Step by Step Solution
- Step 1: Write the proportion equation
28,952,359.80 : 39,963,213.27 = 18,639,074.69 : x - Step 2: Convert to fraction form
28,952,359.80/39,963,213.27 = 18,639,074.69/x - Step 3: Cross multiply
28,952,359.80x = 39,963,213.27 × 18,639,074.69 - Step 4: Simplify right side
28,952,359.80x = 744,877,316,991,929.25 - Step 5: Solve for x
x = 744,877,316,991,929.25/28,952,359.80 - Step 6: Final answer
x = 25,727,689.28
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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.