Finding the Fourth Proportional to 21,011,885.84, 31,518,794.68 and 6,437,761.58
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Solution
The fourth proportional to 21,011,885.84, 31,518,794.68 and 6,437,761.58 is: 9,656,938.32
Step by Step Solution
- Step 1: Write the proportion equation
21,011,885.84 : 31,518,794.68 = 6,437,761.58 : x - Step 2: Convert to fraction form
21,011,885.84/31,518,794.68 = 6,437,761.58/x - Step 3: Cross multiply
21,011,885.84x = 31,518,794.68 × 6,437,761.58 - Step 4: Simplify right side
21,011,885.84x = 202,910,485,438,812.41 - Step 5: Solve for x
x = 202,910,485,438,812.41/21,011,885.84 - Step 6: Final answer
x = 9,656,938.32
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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.