Finding the Fourth Proportional to 15,519,771.36, 21,415,090.32 and 8,813,875.68
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Solution
The fourth proportional to 15,519,771.36, 21,415,090.32 and 8,813,875.68 is: 12,161,902.35
Step by Step Solution
- Step 1: Write the proportion equation
15,519,771.36 : 21,415,090.32 = 8,813,875.68 : x - Step 2: Convert to fraction form
15,519,771.36/21,415,090.32 = 8,813,875.68/x - Step 3: Cross multiply
15,519,771.36x = 21,415,090.32 × 8,813,875.68 - Step 4: Simplify right side
15,519,771.36x = 188,749,943,756,451.41 - Step 5: Solve for x
x = 188,749,943,756,451.41/15,519,771.36 - Step 6: Final answer
x = 12,161,902.35
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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.