Finding the Fourth Proportional to 28,545,531.53, 39,392,871.72 and 15,492,790.63
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Solution
The fourth proportional to 28,545,531.53, 39,392,871.72 and 15,492,790.63 is: 21,380,071.80
Step by Step Solution
- Step 1: Write the proportion equation
28,545,531.53 : 39,392,871.72 = 15,492,790.63 : x - Step 2: Convert to fraction form
28,545,531.53/39,392,871.72 = 15,492,790.63/x - Step 3: Cross multiply
28,545,531.53x = 39,392,871.72 × 15,492,790.63 - Step 4: Simplify right side
28,545,531.53x = 610,305,513,641,966.25 - Step 5: Solve for x
x = 610,305,513,641,966.25/28,545,531.53 - Step 6: Final answer
x = 21,380,071.80
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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.