Finding the Fourth Proportional to 13,590,983.98, 18,755,560.99 and 7,479,412.48
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Solution
The fourth proportional to 13,590,983.98, 18,755,560.99 and 7,479,412.48 is: 10,321,590.93
Step by Step Solution
- Step 1: Write the proportion equation
13,590,983.98 : 18,755,560.99 = 7,479,412.48 : x - Step 2: Convert to fraction form
13,590,983.98/18,755,560.99 = 7,479,412.48/x - Step 3: Cross multiply
13,590,983.98x = 18,755,560.99 × 7,479,412.48 - Step 4: Simplify right side
13,590,983.98x = 140,280,576,970,800.88 - Step 5: Solve for x
x = 140,280,576,970,800.88/13,590,983.98 - Step 6: Final answer
x = 10,321,590.93
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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.