Finding the Fourth Proportional to 21,420,966.58, 29,561,781.47 and 12,001,838.81
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Solution
The fourth proportional to 21,420,966.58, 29,561,781.47 and 12,001,838.81 is: 16,563,012.45
Step by Step Solution
- Step 1: Write the proportion equation
21,420,966.58 : 29,561,781.47 = 12,001,838.81 : x - Step 2: Convert to fraction form
21,420,966.58/29,561,781.47 = 12,001,838.81/x - Step 3: Cross multiply
21,420,966.58x = 29,561,781.47 × 12,001,838.81 - Step 4: Simplify right side
21,420,966.58x = 354,795,736,014,724.06 - Step 5: Solve for x
x = 354,795,736,014,724.06/21,420,966.58 - Step 6: Final answer
x = 16,563,012.45
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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.