Finding the Fourth Proportional to 19,571,860.20, 29,357,790.30 and 15,540,781.80
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Solution
The fourth proportional to 19,571,860.20, 29,357,790.30 and 15,540,781.80 is: 23,311,172.70
Step by Step Solution
- Step 1: Write the proportion equation
19,571,860.20 : 29,357,790.30 = 15,540,781.80 : x - Step 2: Convert to fraction form
19,571,860.20/29,357,790.30 = 15,540,781.80/x - Step 3: Cross multiply
19,571,860.20x = 29,357,790.30 × 15,540,781.80 - Step 4: Simplify right side
19,571,860.20x = 456,243,013,182,456.56 - Step 5: Solve for x
x = 456,243,013,182,456.56/19,571,860.20 - Step 6: Final answer
x = 23,311,172.70
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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.