Finding the Fourth Proportional to 28,840,171.68, 39,799,433.96 and 15,787,439.44
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Solution
The fourth proportional to 28,840,171.68, 39,799,433.96 and 15,787,439.44 is: 21,786,664.81
Step by Step Solution
- Step 1: Write the proportion equation
28,840,171.68 : 39,799,433.96 = 15,787,439.44 : x - Step 2: Convert to fraction form
28,840,171.68/39,799,433.96 = 15,787,439.44/x - Step 3: Cross multiply
28,840,171.68x = 39,799,433.96 × 15,787,439.44 - Step 4: Simplify right side
28,840,171.68x = 628,331,153,389,779.38 - Step 5: Solve for x
x = 628,331,153,389,779.38/28,840,171.68 - Step 6: Final answer
x = 21,786,664.81
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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.