Finding the Fourth Proportional to 21,344,216.70, 29,455,012.80 and 11,554,653.62
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Solution
The fourth proportional to 21,344,216.70, 29,455,012.80 and 11,554,653.62 is: 15,945,418.61
Step by Step Solution
- Step 1: Write the proportion equation
21,344,216.70 : 29,455,012.80 = 11,554,653.62 : x - Step 2: Convert to fraction form
21,344,216.70/29,455,012.80 = 11,554,653.62/x - Step 3: Cross multiply
21,344,216.70x = 29,455,012.80 × 11,554,653.62 - Step 4: Simplify right side
21,344,216.70x = 340,342,470,276,666.31 - Step 5: Solve for x
x = 340,342,470,276,666.31/21,344,216.70 - Step 6: Final answer
x = 15,945,418.61
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1.5x scale
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.