Finding the Fourth Proportional to 15,015,995.88, 20,721,276.24 and 8,489,235.12
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Solution
The fourth proportional to 15,015,995.88, 20,721,276.24 and 8,489,235.12 is: 11,714,693.28
Step by Step Solution
- Step 1: Write the proportion equation
15,015,995.88 : 20,721,276.24 = 8,489,235.12 : x - Step 2: Convert to fraction form
15,015,995.88/20,721,276.24 = 8,489,235.12/x - Step 3: Cross multiply
15,015,995.88x = 20,721,276.24 × 8,489,235.12 - Step 4: Simplify right side
15,015,995.88x = 175,907,785,987,829.53 - Step 5: Solve for x
x = 175,907,785,987,829.53/15,015,995.88 - Step 6: Final answer
x = 11,714,693.28
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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.