Finding the Fourth Proportional to 20,840,842.08, 28,774,396.80 and 13,012,273.08
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Solution
The fourth proportional to 20,840,842.08, 28,774,396.80 and 13,012,273.08 is: 17,965,699.63
Step by Step Solution
- Step 1: Write the proportion equation
20,840,842.08 : 28,774,396.80 = 13,012,273.08 : x - Step 2: Convert to fraction form
20,840,842.08/28,774,396.80 = 13,012,273.08/x - Step 3: Cross multiply
20,840,842.08x = 28,774,396.80 × 13,012,273.08 - Step 4: Simplify right side
20,840,842.08x = 374,420,308,873,878.12 - Step 5: Solve for x
x = 374,420,308,873,878.12/20,840,842.08 - Step 6: Final answer
x = 17,965,699.63
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1.5x scale
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.