Finding the Fourth Proportional to 20,220,357.80, 30,330,536.70 and 19,104,331.70
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Solution
The fourth proportional to 20,220,357.80, 30,330,536.70 and 19,104,331.70 is: 28,656,497.55
Step by Step Solution
- Step 1: Write the proportion equation
20,220,357.80 : 30,330,536.70 = 19,104,331.70 : x - Step 2: Convert to fraction form
20,220,357.80/30,330,536.70 = 19,104,331.70/x - Step 3: Cross multiply
20,220,357.80x = 30,330,536.70 × 19,104,331.70 - Step 4: Simplify right side
20,220,357.80x = 579,444,633,755,823.38 - Step 5: Solve for x
x = 579,444,633,755,823.38/20,220,357.80 - Step 6: Final answer
x = 28,656,497.55
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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.