Finding the Fourth Proportional to 28,618,526.76, 39,489,982.38 and 19,346,271.42
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Solution
The fourth proportional to 28,618,526.76, 39,489,982.38 and 19,346,271.42 is: 26,695,431.39
Step by Step Solution
- Step 1: Write the proportion equation
28,618,526.76 : 39,489,982.38 = 19,346,271.42 : x - Step 2: Convert to fraction form
28,618,526.76/39,489,982.38 = 19,346,271.42/x - Step 3: Cross multiply
28,618,526.76x = 39,489,982.38 × 19,346,271.42 - Step 4: Simplify right side
28,618,526.76x = 763,983,917,494,497.75 - Step 5: Solve for x
x = 763,983,917,494,497.75/28,618,526.76 - Step 6: Final answer
x = 26,695,431.39
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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.