Finding the Fourth Proportional to 20,238,470.33, 27,929,125.80 and 11,071,113.08
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Solution
The fourth proportional to 20,238,470.33, 27,929,125.80 and 11,071,113.08 is: 15,278,156.15
Step by Step Solution
- Step 1: Write the proportion equation
20,238,470.33 : 27,929,125.80 = 11,071,113.08 : x - Step 2: Convert to fraction form
20,238,470.33/27,929,125.80 = 11,071,113.08/x - Step 3: Cross multiply
20,238,470.33x = 27,929,125.80 × 11,071,113.08 - Step 4: Simplify right side
20,238,470.33x = 309,206,509,817,699.81 - Step 5: Solve for x
x = 309,206,509,817,699.81/20,238,470.33 - Step 6: Final answer
x = 15,278,156.15
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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.