Finding the Fourth Proportional to 12,959,471.14, 17,883,728.70 and 7,158,128.34
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Solution
The fourth proportional to 12,959,471.14, 17,883,728.70 and 7,158,128.34 is: 9,878,028.50
Step by Step Solution
- Step 1: Write the proportion equation
12,959,471.14 : 17,883,728.70 = 7,158,128.34 : x - Step 2: Convert to fraction form
12,959,471.14/17,883,728.70 = 7,158,128.34/x - Step 3: Cross multiply
12,959,471.14x = 17,883,728.70 × 7,158,128.34 - Step 4: Simplify right side
12,959,471.14x = 128,014,025,232,341.34 - Step 5: Solve for x
x = 128,014,025,232,341.34/12,959,471.14 - Step 6: Final answer
x = 9,878,028.50
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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.