Finding the Fourth Proportional to 20,289,639.30, 27,996,712.79 and 12,338,125.26
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Solution
The fourth proportional to 20,289,639.30, 27,996,712.79 and 12,338,125.26 is: 17,024,794.98
Step by Step Solution
- Step 1: Write the proportion equation
20,289,639.30 : 27,996,712.79 = 12,338,125.26 : x - Step 2: Convert to fraction form
20,289,639.30/27,996,712.79 = 12,338,125.26/x - Step 3: Cross multiply
20,289,639.30x = 27,996,712.79 × 12,338,125.26 - Step 4: Simplify right side
20,289,639.30x = 345,426,949,271,264.06 - Step 5: Solve for x
x = 345,426,949,271,264.06/20,289,639.30 - Step 6: Final answer
x = 17,024,794.98
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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.