Finding the Fourth Proportional to 19,660,276.80, 29,490,415.20 and 13,235,745.60
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Solution
The fourth proportional to 19,660,276.80, 29,490,415.20 and 13,235,745.60 is: 19,853,618.40
Step by Step Solution
- Step 1: Write the proportion equation
19,660,276.80 : 29,490,415.20 = 13,235,745.60 : x - Step 2: Convert to fraction form
19,660,276.80/29,490,415.20 = 13,235,745.60/x - Step 3: Cross multiply
19,660,276.80x = 29,490,415.20 × 13,235,745.60 - Step 4: Simplify right side
19,660,276.80x = 390,327,633,225,573.12 - Step 5: Solve for x
x = 390,327,633,225,573.12/19,660,276.80 - Step 6: Final answer
x = 19,853,618.40
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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.