Finding the Fourth Proportional to 12,127,789.30, 18,191,683.95 and 5,750,497.30
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Solution
The fourth proportional to 12,127,789.30, 18,191,683.95 and 5,750,497.30 is: 8,625,745.95
Step by Step Solution
- Step 1: Write the proportion equation
12,127,789.30 : 18,191,683.95 = 5,750,497.30 : x - Step 2: Convert to fraction form
12,127,789.30/18,191,683.95 = 5,750,497.30/x - Step 3: Cross multiply
12,127,789.30x = 18,191,683.95 × 5,750,497.30 - Step 4: Simplify right side
12,127,789.30x = 104,611,229,436,928.33 - Step 5: Solve for x
x = 104,611,229,436,928.33/12,127,789.30 - Step 6: Final answer
x = 8,625,745.95
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1.5x scale
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.