Finding the Fourth Proportional to 28,679,135.05, 39,577,212.09 and 15,626,393.97
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Solution
The fourth proportional to 28,679,135.05, 39,577,212.09 and 15,626,393.97 is: 21,564,426.80
Step by Step Solution
- Step 1: Write the proportion equation
28,679,135.05 : 39,577,212.09 = 15,626,393.97 : x - Step 2: Convert to fraction form
28,679,135.05/39,577,212.09 = 15,626,393.97/x - Step 3: Cross multiply
28,679,135.05x = 39,577,212.09 × 15,626,393.97 - Step 4: Simplify right side
28,679,135.05x = 618,449,108,352,587.12 - Step 5: Solve for x
x = 618,449,108,352,587.12/28,679,135.05 - Step 6: Final answer
x = 21,564,426.80
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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.