Finding the Fourth Proportional to 19,659,066.55, 27,129,637.79 and 10,957,790.91
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Solution
The fourth proportional to 19,659,066.55, 27,129,637.79 and 10,957,790.91 is: 15,121,821.65
Step by Step Solution
- Step 1: Write the proportion equation
19,659,066.55 : 27,129,637.79 = 10,957,790.91 : x - Step 2: Convert to fraction form
19,659,066.55/27,129,637.79 = 10,957,790.91/x - Step 3: Cross multiply
19,659,066.55x = 27,129,637.79 × 10,957,790.91 - Step 4: Simplify right side
19,659,066.55x = 297,280,898,176,417.31 - Step 5: Solve for x
x = 297,280,898,176,417.31/19,659,066.55 - Step 6: Final answer
x = 15,121,821.65
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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.