Finding the Fourth Proportional to 20,421,125,266.09, 28,181,152,921.43 and 11,033,751,442.09
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Solution
The fourth proportional to 20,421,125,266.09, 28,181,152,921.43 and 11,033,751,442.09 is: 15,226,577,019.38
Step by Step Solution
- Step 1: Write the proportion equation
20,421,125,266.09 : 28,181,152,921.43 = 11,033,751,442.09 : x - Step 2: Convert to fraction form
20,421,125,266.09/28,181,152,921.43 = 11,033,751,442.09/x - Step 3: Cross multiply
20,421,125,266.09x = 28,181,152,921.43 × 11,033,751,442.09 - Step 4: Simplify right side
20,421,125,266.09x = 310,943,836,686,390,984,704 - Step 5: Solve for x
x = 310,943,836,686,390,984,704/20,421,125,266.09 - Step 6: Final answer
x = 15,226,577,019.38
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.