Finding the Fourth Proportional to 21,885,919.12, 30,206,733.60 and 14,430,465.28
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Solution
The fourth proportional to 21,885,919.12, 30,206,733.60 and 14,430,465.28 is: 19,916,788.42
Step by Step Solution
- Step 1: Write the proportion equation
21,885,919.12 : 30,206,733.60 = 14,430,465.28 : x - Step 2: Convert to fraction form
21,885,919.12/30,206,733.60 = 14,430,465.28/x - Step 3: Cross multiply
21,885,919.12x = 30,206,733.60 × 14,430,465.28 - Step 4: Simplify right side
21,885,919.12x = 435,897,220,437,009.44 - Step 5: Solve for x
x = 435,897,220,437,009.44/21,885,919.12 - Step 6: Final answer
x = 19,916,788.42
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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.