Finding the Fourth Proportional to 38,216,358.55, 52,738,207.68 and 20,812,994.38
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Solution
The fourth proportional to 38,216,358.55, 52,738,207.68 and 20,812,994.38 is: 28,721,732.31
Step by Step Solution
- Step 1: Write the proportion equation
38,216,358.55 : 52,738,207.68 = 20,812,994.38 : x - Step 2: Convert to fraction form
38,216,358.55/52,738,207.68 = 20,812,994.38/x - Step 3: Cross multiply
38,216,358.55x = 52,738,207.68 × 20,812,994.38 - Step 4: Simplify right side
38,216,358.55x = 1,097,640,020,055,112.75 - Step 5: Solve for x
x = 1,097,640,020,055,112.75/38,216,358.55 - Step 6: Final answer
x = 28,721,732.31
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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.