Finding the Fourth Proportional to 18,924,620.96, 28,386,521.56 and 5,277,403.18
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Solution
The fourth proportional to 18,924,620.96, 28,386,521.56 and 5,277,403.18 is: 7,915,990.47
Step by Step Solution
- Step 1: Write the proportion equation
18,924,620.96 : 28,386,521.56 = 5,277,403.18 : x - Step 2: Convert to fraction form
18,924,620.96/28,386,521.56 = 5,277,403.18/x - Step 3: Cross multiply
18,924,620.96x = 28,386,521.56 × 5,277,403.18 - Step 4: Simplify right side
18,924,620.96x = 149,807,119,149,882.53 - Step 5: Solve for x
x = 149,807,119,149,882.53/18,924,620.96 - Step 6: Final answer
x = 7,915,990.47
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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.