Finding the Fourth Proportional to 21,271,709.22, 29,354,560.09 and 13,011,164.70
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Solution
The fourth proportional to 21,271,709.22, 29,354,560.09 and 13,011,164.70 is: 17,955,163.45
Step by Step Solution
- Step 1: Write the proportion equation
21,271,709.22 : 29,354,560.09 = 13,011,164.70 : x - Step 2: Convert to fraction form
21,271,709.22/29,354,560.09 = 13,011,164.70/x - Step 3: Cross multiply
21,271,709.22x = 29,354,560.09 × 13,011,164.70 - Step 4: Simplify right side
21,271,709.22x = 381,937,015,884,429.25 - Step 5: Solve for x
x = 381,937,015,884,429.25/21,271,709.22 - Step 6: Final answer
x = 17,955,163.45
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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.