Finding the Fourth Proportional to 12,390,191.13, 18,578,905.08 and 5,560,909.82
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Solution
The fourth proportional to 12,390,191.13, 18,578,905.08 and 5,560,909.82 is: 8,338,500.55
Step by Step Solution
- Step 1: Write the proportion equation
12,390,191.13 : 18,578,905.08 = 5,560,909.82 : x - Step 2: Convert to fraction form
12,390,191.13/18,578,905.08 = 5,560,909.82/x - Step 3: Cross multiply
12,390,191.13x = 18,578,905.08 × 5,560,909.82 - Step 4: Simplify right side
12,390,191.13x = 103,315,615,611,325.36 - Step 5: Solve for x
x = 103,315,615,611,325.36/12,390,191.13 - Step 6: Final answer
x = 8,338,500.55
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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.