Finding the Fourth Proportional to 28,851,752.09, 39,815,416.94 and 15,799,808.99
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Solution
The fourth proportional to 28,851,752.09, 39,815,416.94 and 15,799,808.99 is: 21,803,735.89
Step by Step Solution
- Step 1: Write the proportion equation
28,851,752.09 : 39,815,416.94 = 15,799,808.99 : x - Step 2: Convert to fraction form
28,851,752.09/39,815,416.94 = 15,799,808.99/x - Step 3: Cross multiply
28,851,752.09x = 39,815,416.94 × 15,799,808.99 - Step 4: Simplify right side
28,851,752.09x = 629,075,982,509,210.25 - Step 5: Solve for x
x = 629,075,982,509,210.25/28,851,752.09 - Step 6: Final answer
x = 21,803,735.89
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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.