Finding the Fourth Proportional to 21,421,768,082.80, 32,132,652,124.20 and 19,095,331,961.20
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Solution
The fourth proportional to 21,421,768,082.80, 32,132,652,124.20 and 19,095,331,961.20 is: 28,642,997,941.80
Step by Step Solution
- Step 1: Write the proportion equation
21,421,768,082.80 : 32,132,652,124.20 = 19,095,331,961.20 : x - Step 2: Convert to fraction form
21,421,768,082.80/32,132,652,124.20 = 19,095,331,961.20/x - Step 3: Cross multiply
21,421,768,082.80x = 32,132,652,124.20 × 19,095,331,961.20 - Step 4: Simplify right side
21,421,768,082.80x = 613,583,659,105,357,398,016 - Step 5: Solve for x
x = 613,583,659,105,357,398,016/21,421,768,082.80 - Step 6: Final answer
x = 28,642,997,941.80
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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.