Finding the Fourth Proportional to 20,812,275.26, 28,720,316.34 and 11,520,226.20
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Solution
The fourth proportional to 20,812,275.26, 28,720,316.34 and 11,520,226.20 is: 15,897,567.02
Step by Step Solution
- Step 1: Write the proportion equation
20,812,275.26 : 28,720,316.34 = 11,520,226.20 : x - Step 2: Convert to fraction form
20,812,275.26/28,720,316.34 = 11,520,226.20/x - Step 3: Cross multiply
20,812,275.26x = 28,720,316.34 × 11,520,226.20 - Step 4: Simplify right side
20,812,275.26x = 330,864,540,772,356.06 - Step 5: Solve for x
x = 330,864,540,772,356.06/20,812,275.26 - Step 6: Final answer
x = 15,897,567.02
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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.