Finding the Fourth Proportional to 28,851,751.09, 39,815,415.56 and 15,799,807.99
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Solution
The fourth proportional to 28,851,751.09, 39,815,415.56 and 15,799,807.99 is: 21,803,734.50
Step by Step Solution
- Step 1: Write the proportion equation
28,851,751.09 : 39,815,415.56 = 15,799,807.99 : x - Step 2: Convert to fraction form
28,851,751.09/39,815,415.56 = 15,799,807.99/x - Step 3: Cross multiply
28,851,751.09x = 39,815,415.56 × 15,799,807.99 - Step 4: Simplify right side
28,851,751.09x = 629,075,920,611,982.12 - Step 5: Solve for x
x = 629,075,920,611,982.12/28,851,751.09 - Step 6: Final answer
x = 21,803,734.50
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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.