Finding the Fourth Proportional to 19,930,285.80, 29,895,428.70 and 10,836,739.80
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Solution
The fourth proportional to 19,930,285.80, 29,895,428.70 and 10,836,739.80 is: 16,255,109.70
Step by Step Solution
- Step 1: Write the proportion equation
19,930,285.80 : 29,895,428.70 = 10,836,739.80 : x - Step 2: Convert to fraction form
19,930,285.80/29,895,428.70 = 10,836,739.80/x - Step 3: Cross multiply
19,930,285.80x = 29,895,428.70 × 10,836,739.80 - Step 4: Simplify right side
19,930,285.80x = 323,968,982,031,352.25 - Step 5: Solve for x
x = 323,968,982,031,352.25/19,930,285.80 - Step 6: Final answer
x = 16,255,109.70
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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.