Finding the Fourth Proportional to 15,126,957.49, 20,875,334.57 and 8,251,470.13
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Solution
The fourth proportional to 15,126,957.49, 20,875,334.57 and 8,251,470.13 is: 11,387,101.46
Step by Step Solution
- Step 1: Write the proportion equation
15,126,957.49 : 20,875,334.57 = 8,251,470.13 : x - Step 2: Convert to fraction form
15,126,957.49/20,875,334.57 = 8,251,470.13/x - Step 3: Cross multiply
15,126,957.49x = 20,875,334.57 × 8,251,470.13 - Step 4: Simplify right side
15,126,957.49x = 172,252,199,658,111.41 - Step 5: Solve for x
x = 172,252,199,658,111.41/15,126,957.49 - Step 6: Final answer
x = 11,387,101.46
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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.