Finding the Fourth Proportional to 28,618,531.50, 39,489,988.94 and 19,346,276.18
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Solution
The fourth proportional to 28,618,531.50, 39,489,988.94 and 19,346,276.18 is: 26,695,437.96
Step by Step Solution
- Step 1: Write the proportion equation
28,618,531.50 : 39,489,988.94 = 19,346,276.18 : x - Step 2: Convert to fraction form
28,618,531.50/39,489,988.94 = 19,346,276.18/x - Step 3: Cross multiply
28,618,531.50x = 39,489,988.94 × 19,346,276.18 - Step 4: Simplify right side
28,618,531.50x = 763,984,232,084,204.25 - Step 5: Solve for x
x = 763,984,232,084,204.25/28,618,531.50 - Step 6: Final answer
x = 26,695,437.96
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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.