Finding the Fourth Proportional to 19,991,347.40, 29,980,022.70 and 10,403,539.40
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Solution
The fourth proportional to 19,991,347.40, 29,980,022.70 and 10,403,539.40 is: 15,601,667.12
Step by Step Solution
- Step 1: Write the proportion equation
19,991,347.40 : 29,980,022.70 = 10,403,539.40 : x - Step 2: Convert to fraction form
19,991,347.40/29,980,022.70 = 10,403,539.40/x - Step 3: Cross multiply
19,991,347.40x = 29,980,022.70 × 10,403,539.40 - Step 4: Simplify right side
19,991,347.40x = 311,898,347,372,344.38 - Step 5: Solve for x
x = 311,898,347,372,344.38/19,991,347.40 - Step 6: Final answer
x = 15,601,667.12
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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.