Finding the Fourth Proportional to 19,890,656.47, 29,835,992.97 and 8,948,064.74
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Solution
The fourth proportional to 19,890,656.47, 29,835,992.97 and 8,948,064.74 is: 13,422,100.84
Step by Step Solution
- Step 1: Write the proportion equation
19,890,656.47 : 29,835,992.97 = 8,948,064.74 : x - Step 2: Convert to fraction form
19,890,656.47/29,835,992.97 = 8,948,064.74/x - Step 3: Cross multiply
19,890,656.47x = 29,835,992.97 × 8,948,064.74 - Step 4: Simplify right side
19,890,656.47x = 266,974,396,843,229.53 - Step 5: Solve for x
x = 266,974,396,843,229.53/19,890,656.47 - Step 6: Final answer
x = 13,422,100.84
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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.