Finding the Fourth Proportional to 28,545,576.66, 39,392,934.76 and 15,492,835.74
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Solution
The fourth proportional to 28,545,576.66, 39,392,934.76 and 15,492,835.74 is: 21,380,134.47
Step by Step Solution
- Step 1: Write the proportion equation
28,545,576.66 : 39,392,934.76 = 15,492,835.74 : x - Step 2: Convert to fraction form
28,545,576.66/39,392,934.76 = 15,492,835.74/x - Step 3: Cross multiply
28,545,576.66x = 39,392,934.76 × 15,492,835.74 - Step 4: Simplify right side
28,545,576.66x = 610,308,267,553,216.25 - Step 5: Solve for x
x = 610,308,267,553,216.25/28,545,576.66 - Step 6: Final answer
x = 21,380,134.47
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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.