Finding the Fourth Proportional to 20,776,691.42, 31,163,559.08 and 6,398,259.92
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Solution
The fourth proportional to 20,776,691.42, 31,163,559.08 and 6,398,259.92 is: 9,596,934.71
Step by Step Solution
- Step 1: Write the proportion equation
20,776,691.42 : 31,163,559.08 = 6,398,259.92 : x - Step 2: Convert to fraction form
20,776,691.42/31,163,559.08 = 6,398,259.92/x - Step 3: Cross multiply
20,776,691.42x = 31,163,559.08 × 6,398,259.92 - Step 4: Simplify right side
20,776,691.42x = 199,392,551,026,116.06 - Step 5: Solve for x
x = 199,392,551,026,116.06/20,776,691.42 - Step 6: Final answer
x = 9,596,934.71
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.