Finding the Fourth Proportional to 19,920,658.68, 27,489,783.21 and 11,099,654.19
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Solution
The fourth proportional to 19,920,658.68, 27,489,783.21 and 11,099,654.19 is: 15,317,118.39
Step by Step Solution
- Step 1: Write the proportion equation
19,920,658.68 : 27,489,783.21 = 11,099,654.19 : x - Step 2: Convert to fraction form
19,920,658.68/27,489,783.21 = 11,099,654.19/x - Step 3: Cross multiply
19,920,658.68x = 27,489,783.21 × 11,099,654.19 - Step 4: Simplify right side
19,920,658.68x = 305,127,087,518,432.06 - Step 5: Solve for x
x = 305,127,087,518,432.06/19,920,658.68 - Step 6: Final answer
x = 15,317,118.39
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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.