Finding the Fourth Proportional to 20,708,474.84, 28,577,781.87 and 11,415,840.92
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Solution
The fourth proportional to 20,708,474.84, 28,577,781.87 and 11,415,840.92 is: 15,753,908.20
Step by Step Solution
- Step 1: Write the proportion equation
20,708,474.84 : 28,577,781.87 = 11,415,840.92 : x - Step 2: Convert to fraction form
20,708,474.84/28,577,781.87 = 11,415,840.92/x - Step 3: Cross multiply
20,708,474.84x = 28,577,781.87 × 11,415,840.92 - Step 4: Simplify right side
20,708,474.84x = 326,239,411,674,380.12 - Step 5: Solve for x
x = 326,239,411,674,380.12/20,708,474.84 - Step 6: Final answer
x = 15,753,908.20
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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.