Finding the Fourth Proportional to 20,329,875.18, 28,055,628.99 and 11,162,437.74
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Solution
The fourth proportional to 20,329,875.18, 28,055,628.99 and 11,162,437.74 is: 15,404,384.39
Step by Step Solution
- Step 1: Write the proportion equation
20,329,875.18 : 28,055,628.99 = 11,162,437.74 : x - Step 2: Convert to fraction form
20,329,875.18/28,055,628.99 = 11,162,437.74/x - Step 3: Cross multiply
20,329,875.18x = 28,055,628.99 × 11,162,437.74 - Step 4: Simplify right side
20,329,875.18x = 313,169,211,857,414.06 - Step 5: Solve for x
x = 313,169,211,857,414.06/20,329,875.18 - Step 6: Final answer
x = 15,404,384.39
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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.