Finding the Fourth Proportional to 12,452,556.70, 18,678,835.05 and 11,974,259.80
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Solution
The fourth proportional to 12,452,556.70, 18,678,835.05 and 11,974,259.80 is: 17,961,389.70
Step by Step Solution
- Step 1: Write the proportion equation
12,452,556.70 : 18,678,835.05 = 11,974,259.80 : x - Step 2: Convert to fraction form
12,452,556.70/18,678,835.05 = 11,974,259.80/x - Step 3: Cross multiply
12,452,556.70x = 18,678,835.05 × 11,974,259.80 - Step 4: Simplify right side
12,452,556.70x = 223,665,223,650,046 - Step 5: Solve for x
x = 223,665,223,650,046/12,452,556.70 - Step 6: Final answer
x = 17,961,389.70
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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.