Finding the Fourth Proportional to 28,839,257.44, 39,798,117.36 and 15,786,520
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Solution
The fourth proportional to 28,839,257.44, 39,798,117.36 and 15,786,520 is: 21,785,365.90
Step by Step Solution
- Step 1: Write the proportion equation
28,839,257.44 : 39,798,117.36 = 15,786,520 : x - Step 2: Convert to fraction form
28,839,257.44/39,798,117.36 = 15,786,520/x - Step 3: Cross multiply
28,839,257.44x = 39,798,117.36 × 15,786,520 - Step 4: Simplify right side
28,839,257.44x = 628,273,775,665,987.25 - Step 5: Solve for x
x = 628,273,775,665,987.25/28,839,257.44 - Step 6: Final answer
x = 21,785,365.90
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1.5x scale
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.