Finding the Fourth Proportional to 19,566,076.80, 29,349,115.20 and 12,385,718.40
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Solution
The fourth proportional to 19,566,076.80, 29,349,115.20 and 12,385,718.40 is: 18,578,577.60
Step by Step Solution
- Step 1: Write the proportion equation
19,566,076.80 : 29,349,115.20 = 12,385,718.40 : x - Step 2: Convert to fraction form
19,566,076.80/29,349,115.20 = 12,385,718.40/x - Step 3: Cross multiply
19,566,076.80x = 29,349,115.20 × 12,385,718.40 - Step 4: Simplify right side
19,566,076.80x = 363,509,876,156,359.69 - Step 5: Solve for x
x = 363,509,876,156,359.69/19,566,076.80 - Step 6: Final answer
x = 18,578,577.60
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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.