Finding the Fourth Proportional to 15,386,539.14, 21,122,234.66 and 13,207,298.94
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Solution
The fourth proportional to 15,386,539.14, 21,122,234.66 and 13,207,298.94 is: 18,130,631.26
Step by Step Solution
- Step 1: Write the proportion equation
15,386,539.14 : 21,122,234.66 = 13,207,298.94 : x - Step 2: Convert to fraction form
15,386,539.14/21,122,234.66 = 13,207,298.94/x - Step 3: Cross multiply
15,386,539.14x = 21,122,234.66 × 13,207,298.94 - Step 4: Simplify right side
15,386,539.14x = 278,967,667,468,467.53 - Step 5: Solve for x
x = 278,967,667,468,467.53/15,386,539.14 - Step 6: Final answer
x = 18,130,631.26
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.