Finding the Fourth Proportional to 22,621,894.94, 31,217,295.74 and 12,832,128.96
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Solution
The fourth proportional to 22,621,894.94, 31,217,295.74 and 12,832,128.96 is: 17,707,816.51
Step by Step Solution
- Step 1: Write the proportion equation
22,621,894.94 : 31,217,295.74 = 12,832,128.96 : x - Step 2: Convert to fraction form
22,621,894.94/31,217,295.74 = 12,832,128.96/x - Step 3: Cross multiply
22,621,894.94x = 31,217,295.74 × 12,832,128.96 - Step 4: Simplify right side
22,621,894.94x = 400,584,364,653,978 - Step 5: Solve for x
x = 400,584,364,653,978/22,621,894.94 - Step 6: Final answer
x = 17,707,816.51
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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.