Finding the Fourth Proportional to 19,974,659.38, 29,883,155.01 and 15,390,981.97
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Solution
The fourth proportional to 19,974,659.38, 29,883,155.01 and 15,390,981.97 is: 23,025,729.31
Step by Step Solution
- Step 1: Write the proportion equation
19,974,659.38 : 29,883,155.01 = 15,390,981.97 : x - Step 2: Convert to fraction form
19,974,659.38/29,883,155.01 = 15,390,981.97/x - Step 3: Cross multiply
19,974,659.38x = 29,883,155.01 × 15,390,981.97 - Step 4: Simplify right side
19,974,659.38x = 459,931,099,965,625.19 - Step 5: Solve for x
x = 459,931,099,965,625.19/19,974,659.38 - Step 6: Final answer
x = 23,025,729.31
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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.