Finding the Fourth Proportional to 20,878,999.14, 31,321,249.20 and 7,746,630.06
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Solution
The fourth proportional to 20,878,999.14, 31,321,249.20 and 7,746,630.06 is: 11,620,965.59
Step by Step Solution
- Step 1: Write the proportion equation
20,878,999.14 : 31,321,249.20 = 7,746,630.06 : x - Step 2: Convert to fraction form
20,878,999.14/31,321,249.20 = 7,746,630.06/x - Step 3: Cross multiply
20,878,999.14x = 31,321,249.20 × 7,746,630.06 - Step 4: Simplify right side
20,878,999.14x = 242,634,130,569,470.94 - Step 5: Solve for x
x = 242,634,130,569,470.94/20,878,999.14 - Step 6: Final answer
x = 11,620,965.59
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.