Finding the Fourth Proportional to 28,693,894.68, 39,597,252.29 and 15,640,867.19
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Solution
The fourth proportional to 28,693,894.68, 39,597,252.29 and 15,640,867.19 is: 21,584,220.99
Step by Step Solution
- Step 1: Write the proportion equation
28,693,894.68 : 39,597,252.29 = 15,640,867.19 : x - Step 2: Convert to fraction form
28,693,894.68/39,597,252.29 = 15,640,867.19/x - Step 3: Cross multiply
28,693,894.68x = 39,597,252.29 × 15,640,867.19 - Step 4: Simplify right side
28,693,894.68x = 619,335,363,880,622.75 - Step 5: Solve for x
x = 619,335,363,880,622.75/28,693,894.68 - Step 6: Final answer
x = 21,584,220.99
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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.