Finding the Fourth Proportional to 18,990,430.68, 26,206,820.40 and 10,288,603.74
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Solution
The fourth proportional to 18,990,430.68, 26,206,820.40 and 10,288,603.74 is: 14,198,287.28
Step by Step Solution
- Step 1: Write the proportion equation
18,990,430.68 : 26,206,820.40 = 10,288,603.74 : x - Step 2: Convert to fraction form
18,990,430.68/26,206,820.40 = 10,288,603.74/x - Step 3: Cross multiply
18,990,430.68x = 26,206,820.40 × 10,288,603.74 - Step 4: Simplify right side
18,990,430.68x = 269,631,590,380,948.28 - Step 5: Solve for x
x = 269,631,590,380,948.28/18,990,430.68 - Step 6: Final answer
x = 14,198,287.28
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.