Finding the Fourth Proportional to 20,514,574.80, 30,771,862.20 and 15,731,605.80
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Solution
The fourth proportional to 20,514,574.80, 30,771,862.20 and 15,731,605.80 is: 23,597,408.70
Step by Step Solution
- Step 1: Write the proportion equation
20,514,574.80 : 30,771,862.20 = 15,731,605.80 : x - Step 2: Convert to fraction form
20,514,574.80/30,771,862.20 = 15,731,605.80/x - Step 3: Cross multiply
20,514,574.80x = 30,771,862.20 × 15,731,605.80 - Step 4: Simplify right side
20,514,574.80x = 484,090,805,862,320.75 - Step 5: Solve for x
x = 484,090,805,862,320.75/20,514,574.80 - Step 6: Final answer
x = 23,597,408.70
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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.