Finding the Fourth Proportional to 28,840,170.68, 39,799,432.58 and 15,787,438.44
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Solution
The fourth proportional to 28,840,170.68, 39,799,432.58 and 15,787,438.44 is: 21,786,663.43
Step by Step Solution
- Step 1: Write the proportion equation
28,840,170.68 : 39,799,432.58 = 15,787,438.44 : x - Step 2: Convert to fraction form
28,840,170.68/39,799,432.58 = 15,787,438.44/x - Step 3: Cross multiply
28,840,170.68x = 39,799,432.58 × 15,787,438.44 - Step 4: Simplify right side
28,840,170.68x = 628,331,091,803,680.38 - Step 5: Solve for x
x = 628,331,091,803,680.38/28,840,170.68 - Step 6: Final answer
x = 21,786,663.43
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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.