Finding the Fourth Proportional to 28,813,068.96, 39,761,567.30 and 15,760,213.70
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Solution
The fourth proportional to 28,813,068.96, 39,761,567.30 and 15,760,213.70 is: 21,748,838.99
Step by Step Solution
- Step 1: Write the proportion equation
28,813,068.96 : 39,761,567.30 = 15,760,213.70 : x - Step 2: Convert to fraction form
28,813,068.96/39,761,567.30 = 15,760,213.70/x - Step 3: Cross multiply
28,813,068.96x = 39,761,567.30 × 15,760,213.70 - Step 4: Simplify right side
28,813,068.96x = 626,650,797,694,931.88 - Step 5: Solve for x
x = 626,650,797,694,931.88/28,813,068.96 - Step 6: Final answer
x = 21,748,838.99
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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.