Finding the Fourth Proportional to 18,135,959.76, 24,985,054.50 and 12,619,848.42
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Solution
The fourth proportional to 18,135,959.76, 24,985,054.50 and 12,619,848.42 is: 17,385,768.65
Step by Step Solution
- Step 1: Write the proportion equation
18,135,959.76 : 24,985,054.50 = 12,619,848.42 : x - Step 2: Convert to fraction form
18,135,959.76/24,985,054.50 = 12,619,848.42/x - Step 3: Cross multiply
18,135,959.76x = 24,985,054.50 × 12,619,848.42 - Step 4: Simplify right side
18,135,959.76x = 315,307,600,555,438.88 - Step 5: Solve for x
x = 315,307,600,555,438.88/18,135,959.76 - Step 6: Final answer
x = 17,385,768.65
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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.