Finding the Fourth Proportional to 28,115,912.84, 38,803,553.06 and 15,726,694.76
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Solution
The fourth proportional to 28,115,912.84, 38,803,553.06 and 15,726,694.76 is: 21,704,848.71
Step by Step Solution
- Step 1: Write the proportion equation
28,115,912.84 : 38,803,553.06 = 15,726,694.76 : x - Step 2: Convert to fraction form
28,115,912.84/38,803,553.06 = 15,726,694.76/x - Step 3: Cross multiply
28,115,912.84x = 38,803,553.06 × 15,726,694.76 - Step 4: Simplify right side
28,115,912.84x = 610,251,634,578,084 - Step 5: Solve for x
x = 610,251,634,578,084/28,115,912.84 - Step 6: Final answer
x = 21,704,848.71
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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.