Finding the Fourth Proportional to 19,890,660.35, 29,835,998.79 and 8,948,068.62
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Solution
The fourth proportional to 19,890,660.35, 29,835,998.79 and 8,948,068.62 is: 13,422,106.65
Step by Step Solution
- Step 1: Write the proportion equation
19,890,660.35 : 29,835,998.79 = 8,948,068.62 : x - Step 2: Convert to fraction form
19,890,660.35/29,835,998.79 = 8,948,068.62/x - Step 3: Cross multiply
19,890,660.35x = 29,835,998.79 × 8,948,068.62 - Step 4: Simplify right side
19,890,660.35x = 266,974,564,519,156.94 - Step 5: Solve for x
x = 266,974,564,519,156.94/19,890,660.35 - Step 6: Final answer
x = 13,422,106.65
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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.