Finding the Fourth Proportional to 19,418,551.10, 29,127,826.65 and 8,081,143.10
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Solution
The fourth proportional to 19,418,551.10, 29,127,826.65 and 8,081,143.10 is: 12,121,714.65
Step by Step Solution
- Step 1: Write the proportion equation
19,418,551.10 : 29,127,826.65 = 8,081,143.10 : x - Step 2: Convert to fraction form
19,418,551.10/29,127,826.65 = 8,081,143.10/x - Step 3: Cross multiply
19,418,551.10x = 29,127,826.65 × 8,081,143.10 - Step 4: Simplify right side
19,418,551.10x = 235,386,135,350,643.59 - Step 5: Solve for x
x = 235,386,135,350,643.59/19,418,551.10 - Step 6: Final answer
x = 12,121,714.65
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Double scale
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Similar ratio
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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.