Finding the Fourth Proportional to 22,685,688.12, 31,306,106.29 and 12,896,132.79
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Solution
The fourth proportional to 22,685,688.12, 31,306,106.29 and 12,896,132.79 is: 17,796,581.78
Step by Step Solution
- Step 1: Write the proportion equation
22,685,688.12 : 31,306,106.29 = 12,896,132.79 : x - Step 2: Convert to fraction form
22,685,688.12/31,306,106.29 = 12,896,132.79/x - Step 3: Cross multiply
22,685,688.12x = 31,306,106.29 × 12,896,132.79 - Step 4: Simplify right side
22,685,688.12x = 403,727,703,874,999.25 - Step 5: Solve for x
x = 403,727,703,874,999.25/22,685,688.12 - Step 6: Final answer
x = 17,796,581.78
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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.