Finding the Fourth Proportional to 28,028,194.56, 38,678,964.48 and 15,151,138.56
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Solution
The fourth proportional to 28,028,194.56, 38,678,964.48 and 15,151,138.56 is: 20,908,601.48
Step by Step Solution
- Step 1: Write the proportion equation
28,028,194.56 : 38,678,964.48 = 15,151,138.56 : x - Step 2: Convert to fraction form
28,028,194.56/38,678,964.48 = 15,151,138.56/x - Step 3: Cross multiply
28,028,194.56x = 38,678,964.48 × 15,151,138.56 - Step 4: Simplify right side
28,028,194.56x = 586,030,350,193,798.38 - Step 5: Solve for x
x = 586,030,350,193,798.38/28,028,194.56 - Step 6: Final answer
x = 20,908,601.48
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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.