Finding the Fourth Proportional to 21,261,371.76, 31,896,708.84 and 6,885,892.62
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Solution
The fourth proportional to 21,261,371.76, 31,896,708.84 and 6,885,892.62 is: 10,330,345.31
Step by Step Solution
- Step 1: Write the proportion equation
21,261,371.76 : 31,896,708.84 = 6,885,892.62 : x - Step 2: Convert to fraction form
21,261,371.76/31,896,708.84 = 6,885,892.62/x - Step 3: Cross multiply
21,261,371.76x = 31,896,708.84 × 6,885,892.62 - Step 4: Simplify right side
21,261,371.76x = 219,637,312,003,644.75 - Step 5: Solve for x
x = 219,637,312,003,644.75/21,261,371.76 - Step 6: Final answer
x = 10,330,345.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.