Finding the Fourth Proportional to 20,386,646.21, 28,133,563.64 and 11,219,288.96
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Solution
The fourth proportional to 20,386,646.21, 28,133,563.64 and 11,219,288.96 is: 15,482,614.29
Step by Step Solution
- Step 1: Write the proportion equation
20,386,646.21 : 28,133,563.64 = 11,219,288.96 : x - Step 2: Convert to fraction form
20,386,646.21/28,133,563.64 = 11,219,288.96/x - Step 3: Cross multiply
20,386,646.21x = 28,133,563.64 × 11,219,288.96 - Step 4: Simplify right side
20,386,646.21x = 315,638,579,965,946.94 - Step 5: Solve for x
x = 315,638,579,965,946.94/20,386,646.21 - Step 6: Final answer
x = 15,482,614.29
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.