Finding the Fourth Proportional to 13,221,685.95, 18,245,961.75 and 7,341,331.02
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Solution
The fourth proportional to 13,221,685.95, 18,245,961.75 and 7,341,331.02 is: 10,131,056.32
Step by Step Solution
- Step 1: Write the proportion equation
13,221,685.95 : 18,245,961.75 = 7,341,331.02 : x - Step 2: Convert to fraction form
13,221,685.95/18,245,961.75 = 7,341,331.02/x - Step 3: Cross multiply
13,221,685.95x = 18,245,961.75 × 7,341,331.02 - Step 4: Simplify right side
13,221,685.95x = 133,949,644,985,008.48 - Step 5: Solve for x
x = 133,949,644,985,008.48/13,221,685.95 - Step 6: Final answer
x = 10,131,056.32
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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.