Finding the Fourth Proportional to 13,781,531.92, 19,018,514.08 and 7,671,403.84
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Solution
The fourth proportional to 13,781,531.92, 19,018,514.08 and 7,671,403.84 is: 10,586,537.32
Step by Step Solution
- Step 1: Write the proportion equation
13,781,531.92 : 19,018,514.08 = 7,671,403.84 : x - Step 2: Convert to fraction form
13,781,531.92/19,018,514.08 = 7,671,403.84/x - Step 3: Cross multiply
13,781,531.92x = 19,018,514.08 × 7,671,403.84 - Step 4: Simplify right side
13,781,531.92x = 145,898,701,944,406.06 - Step 5: Solve for x
x = 145,898,701,944,406.06/13,781,531.92 - Step 6: Final answer
x = 10,586,537.32
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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.