Finding the Fourth Proportional to 20,706,441.40, 31,024,232.70 and 13,124,549.80
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Solution
The fourth proportional to 20,706,441.40, 31,024,232.70 and 13,124,549.80 is: 19,664,368.17
Step by Step Solution
- Step 1: Write the proportion equation
20,706,441.40 : 31,024,232.70 = 13,124,549.80 : x - Step 2: Convert to fraction form
20,706,441.40/31,024,232.70 = 13,124,549.80/x - Step 3: Cross multiply
20,706,441.40x = 31,024,232.70 × 13,124,549.80 - Step 4: Simplify right side
20,706,441.40x = 407,179,087,077,938.50 - Step 5: Solve for x
x = 407,179,087,077,938.50/20,706,441.40 - Step 6: Final answer
x = 19,664,368.17
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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.