Finding the Fourth Proportional to 21,456,079.80, 32,184,119.70 and 13,378,176.60
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Solution
The fourth proportional to 21,456,079.80, 32,184,119.70 and 13,378,176.60 is: 20,067,264.90
Step by Step Solution
- Step 1: Write the proportion equation
21,456,079.80 : 32,184,119.70 = 13,378,176.60 : x - Step 2: Convert to fraction form
21,456,079.80/32,184,119.70 = 13,378,176.60/x - Step 3: Cross multiply
21,456,079.80x = 32,184,119.70 × 13,378,176.60 - Step 4: Simplify right side
21,456,079.80x = 430,564,837,062,139 - Step 5: Solve for x
x = 430,564,837,062,139/21,456,079.80 - Step 6: Final answer
x = 20,067,264.90
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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.