Finding the Fourth Proportional to 18,630,656.40, 27,938,318.76 and 7,120,374.96
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Solution
The fourth proportional to 18,630,656.40, 27,938,318.76 and 7,120,374.96 is: 10,677,632.66
Step by Step Solution
- Step 1: Write the proportion equation
18,630,656.40 : 27,938,318.76 = 7,120,374.96 : x - Step 2: Convert to fraction form
18,630,656.40/27,938,318.76 = 7,120,374.96/x - Step 3: Cross multiply
18,630,656.40x = 27,938,318.76 × 7,120,374.96 - Step 4: Simplify right side
18,630,656.40x = 198,931,305,323,202.25 - Step 5: Solve for x
x = 198,931,305,323,202.25/18,630,656.40 - Step 6: Final answer
x = 10,677,632.66
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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.