Finding the Fourth Proportional to 28,618,531.52, 39,489,988.91 and 19,346,276.17
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Solution
The fourth proportional to 28,618,531.52, 39,489,988.91 and 19,346,276.17 is: 26,695,437.91
Step by Step Solution
- Step 1: Write the proportion equation
28,618,531.52 : 39,489,988.91 = 19,346,276.17 : x - Step 2: Convert to fraction form
28,618,531.52/39,489,988.91 = 19,346,276.17/x - Step 3: Cross multiply
28,618,531.52x = 39,489,988.91 × 19,346,276.17 - Step 4: Simplify right side
28,618,531.52x = 763,984,231,352,738 - Step 5: Solve for x
x = 763,984,231,352,738/28,618,531.52 - Step 6: Final answer
x = 26,695,437.91
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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.