Finding the Fourth Proportional to 19,684,246.80, 29,526,370.20 and 13,259,715.60
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Solution
The fourth proportional to 19,684,246.80, 29,526,370.20 and 13,259,715.60 is: 19,889,573.40
Step by Step Solution
- Step 1: Write the proportion equation
19,684,246.80 : 29,526,370.20 = 13,259,715.60 : x - Step 2: Convert to fraction form
19,684,246.80/29,526,370.20 = 13,259,715.60/x - Step 3: Cross multiply
19,684,246.80x = 29,526,370.20 × 13,259,715.60 - Step 4: Simplify right side
19,684,246.80x = 391,511,271,552,315.12 - Step 5: Solve for x
x = 391,511,271,552,315.12/19,684,246.80 - Step 6: Final answer
x = 19,889,573.40
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1.5x scale
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.