Finding the Fourth Proportional to 12,481,567.70, 18,722,351.55 and 5,291,878.10
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Solution
The fourth proportional to 12,481,567.70, 18,722,351.55 and 5,291,878.10 is: 7,937,817.15
Step by Step Solution
- Step 1: Write the proportion equation
12,481,567.70 : 18,722,351.55 = 5,291,878.10 : x - Step 2: Convert to fraction form
12,481,567.70/18,722,351.55 = 5,291,878.10/x - Step 3: Cross multiply
12,481,567.70x = 18,722,351.55 × 5,291,878.10 - Step 4: Simplify right side
12,481,567.70x = 99,076,402,147,946.05 - Step 5: Solve for x
x = 99,076,402,147,946.05/12,481,567.70 - Step 6: Final answer
x = 7,937,817.15
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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.