Finding the Fourth Proportional to 21,483,574,729.99, 29,432,602,396.15 and 20,678,375,254.05
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Solution
The fourth proportional to 21,483,574,729.99, 29,432,602,396.15 and 20,678,375,254.05 is: 28,329,475,178.13
Step by Step Solution
- Step 1: Write the proportion equation
21,483,574,729.99 : 29,432,602,396.15 = 20,678,375,254.05 : x - Step 2: Convert to fraction form
21,483,574,729.99/29,432,602,396.15 = 20,678,375,254.05/x - Step 3: Cross multiply
21,483,574,729.99x = 29,432,602,396.15 × 20,678,375,254.05 - Step 4: Simplify right side
21,483,574,729.99x = 608,618,397,050,778,812,416 - Step 5: Solve for x
x = 608,618,397,050,778,812,416/21,483,574,729.99 - Step 6: Final answer
x = 28,329,475,178.13
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.