Finding the Fourth Proportional to 20,710,743.47, 31,066,114.32 and 19,675,125.53
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Solution
The fourth proportional to 20,710,743.47, 31,066,114.32 and 19,675,125.53 is: 29,512,687.45
Step by Step Solution
- Step 1: Write the proportion equation
20,710,743.47 : 31,066,114.32 = 19,675,125.53 : x - Step 2: Convert to fraction form
20,710,743.47/31,066,114.32 = 19,675,125.53/x - Step 3: Cross multiply
20,710,743.47x = 31,066,114.32 × 19,675,125.53 - Step 4: Simplify right side
20,710,743.47x = 611,229,698,820,000 - Step 5: Solve for x
x = 611,229,698,820,000/20,710,743.47 - Step 6: Final answer
x = 29,512,687.45
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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.