Finding the Fourth Proportional to 13,283,990.70, 19,925,986.05 and 12,087,264.30
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Solution
The fourth proportional to 13,283,990.70, 19,925,986.05 and 12,087,264.30 is: 18,130,896.45
Step by Step Solution
- Step 1: Write the proportion equation
13,283,990.70 : 19,925,986.05 = 12,087,264.30 : x - Step 2: Convert to fraction form
13,283,990.70/19,925,986.05 = 12,087,264.30/x - Step 3: Cross multiply
13,283,990.70x = 19,925,986.05 × 12,087,264.30 - Step 4: Simplify right side
13,283,990.70x = 240,850,659,824,463.03 - Step 5: Solve for x
x = 240,850,659,824,463.03/13,283,990.70 - Step 6: Final answer
x = 18,130,896.45
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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.