Finding the Fourth Proportional to 13,771,258.20, 20,656,887.30 and 12,259,603.80
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Solution
The fourth proportional to 13,771,258.20, 20,656,887.30 and 12,259,603.80 is: 18,389,405.70
Step by Step Solution
- Step 1: Write the proportion equation
13,771,258.20 : 20,656,887.30 = 12,259,603.80 : x - Step 2: Convert to fraction form
13,771,258.20/20,656,887.30 = 12,259,603.80/x - Step 3: Cross multiply
13,771,258.20x = 20,656,887.30 × 12,259,603.80 - Step 4: Simplify right side
13,771,258.20x = 253,245,254,039,251.75 - Step 5: Solve for x
x = 253,245,254,039,251.75/13,771,258.20 - Step 6: Final answer
x = 18,389,405.70
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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.