Finding the Fourth Proportional to 21,409,980.16, 29,544,982.32 and 11,620,214.12
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Solution
The fourth proportional to 21,409,980.16, 29,544,982.32 and 11,620,214.12 is: 16,035,466.55
Step by Step Solution
- Step 1: Write the proportion equation
21,409,980.16 : 29,544,982.32 = 11,620,214.12 : x - Step 2: Convert to fraction form
21,409,980.16/29,544,982.32 = 11,620,214.12/x - Step 3: Cross multiply
21,409,980.16x = 29,544,982.32 × 11,620,214.12 - Step 4: Simplify right side
21,409,980.16x = 343,319,020,730,014.31 - Step 5: Solve for x
x = 343,319,020,730,014.31/21,409,980.16 - Step 6: Final answer
x = 16,035,466.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.