Finding the Fourth Proportional to 21,135,157.55, 31,692,742.95 and 8,187,372.76
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Solution
The fourth proportional to 21,135,157.55, 31,692,742.95 and 8,187,372.76 is: 12,277,187.89
Step by Step Solution
- Step 1: Write the proportion equation
21,135,157.55 : 31,692,742.95 = 8,187,372.76 : x - Step 2: Convert to fraction form
21,135,157.55/31,692,742.95 = 8,187,372.76/x - Step 3: Cross multiply
21,135,157.55x = 31,692,742.95 × 8,187,372.76 - Step 4: Simplify right side
21,135,157.55x = 259,480,300,318,512.03 - Step 5: Solve for x
x = 259,480,300,318,512.03/21,135,157.55 - Step 6: Final answer
x = 12,277,187.89
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.