Finding the Fourth Proportional to 21,709,987.23, 29,960,759.66 and 13,007,973.02
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Solution
The fourth proportional to 21,709,987.23, 29,960,759.66 and 13,007,973.02 is: 17,951,588.32
Step by Step Solution
- Step 1: Write the proportion equation
21,709,987.23 : 29,960,759.66 = 13,007,973.02 : x - Step 2: Convert to fraction form
21,709,987.23/29,960,759.66 = 13,007,973.02/x - Step 3: Cross multiply
21,709,987.23x = 29,960,759.66 × 13,007,973.02 - Step 4: Simplify right side
21,709,987.23x = 389,728,753,101,140.75 - Step 5: Solve for x
x = 389,728,753,101,140.75/21,709,987.23 - Step 6: Final answer
x = 17,951,588.32
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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.