Finding the Fourth Proportional to 20,460,031.20, 28,232,832.84 and 11,292,083.52
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Solution
The fourth proportional to 20,460,031.20, 28,232,832.84 and 11,292,083.52 is: 15,581,965.80
Step by Step Solution
- Step 1: Write the proportion equation
20,460,031.20 : 28,232,832.84 = 11,292,083.52 : x - Step 2: Convert to fraction form
20,460,031.20/28,232,832.84 = 11,292,083.52/x - Step 3: Cross multiply
20,460,031.20x = 28,232,832.84 × 11,292,083.52 - Step 4: Simplify right side
20,460,031.20x = 318,807,506,435,478.81 - Step 5: Solve for x
x = 318,807,506,435,478.81/20,460,031.20 - Step 6: Final answer
x = 15,581,965.80
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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.