Finding the Fourth Proportional to 21,391,817.91, 29,521,376.97 and 12,099,206.15
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Solution
The fourth proportional to 21,391,817.91, 29,521,376.97 and 12,099,206.15 is: 16,697,282.45
Step by Step Solution
- Step 1: Write the proportion equation
21,391,817.91 : 29,521,376.97 = 12,099,206.15 : x - Step 2: Convert to fraction form
21,391,817.91/29,521,376.97 = 12,099,206.15/x - Step 3: Cross multiply
21,391,817.91x = 29,521,376.97 × 12,099,206.15 - Step 4: Simplify right side
21,391,817.91x = 357,185,225,791,892.38 - Step 5: Solve for x
x = 357,185,225,791,892.38/21,391,817.91 - Step 6: Final answer
x = 16,697,282.45
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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.