Finding the Fourth Proportional to 20,736,077.10, 31,104,115.65 and 19,318,901.10
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Solution
The fourth proportional to 20,736,077.10, 31,104,115.65 and 19,318,901.10 is: 28,978,351.65
Step by Step Solution
- Step 1: Write the proportion equation
20,736,077.10 : 31,104,115.65 = 19,318,901.10 : x - Step 2: Convert to fraction form
20,736,077.10/31,104,115.65 = 19,318,901.10/x - Step 3: Cross multiply
20,736,077.10x = 31,104,115.65 × 19,318,901.10 - Step 4: Simplify right side
20,736,077.10x = 600,897,334,045,312.25 - Step 5: Solve for x
x = 600,897,334,045,312.25/20,736,077.10 - Step 6: Final answer
x = 28,978,351.65
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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.