Finding the Fourth Proportional to 18,788,132.28, 28,134,356.34 and 12,378,953.82
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Solution
The fourth proportional to 18,788,132.28, 28,134,356.34 and 12,378,953.82 is: 18,536,908.98
Step by Step Solution
- Step 1: Write the proportion equation
18,788,132.28 : 28,134,356.34 = 12,378,953.82 : x - Step 2: Convert to fraction form
18,788,132.28/28,134,356.34 = 12,378,953.82/x - Step 3: Cross multiply
18,788,132.28x = 28,134,356.34 × 12,378,953.82 - Step 4: Simplify right side
18,788,132.28x = 348,273,897,888,284.25 - Step 5: Solve for x
x = 348,273,897,888,284.25/18,788,132.28 - Step 6: Final answer
x = 18,536,908.98
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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.