Finding the Fourth Proportional to 13,682,162.64, 18,881,386.19 and 7,487,210.70
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Solution
The fourth proportional to 13,682,162.64, 18,881,386.19 and 7,487,210.70 is: 10,332,351.72
Step by Step Solution
- Step 1: Write the proportion equation
13,682,162.64 : 18,881,386.19 = 7,487,210.70 : x - Step 2: Convert to fraction form
13,682,162.64/18,881,386.19 = 7,487,210.70/x - Step 3: Cross multiply
13,682,162.64x = 18,881,386.19 × 7,487,210.70 - Step 4: Simplify right side
13,682,162.64x = 141,368,916,712,600.25 - Step 5: Solve for x
x = 141,368,916,712,600.25/13,682,162.64 - Step 6: Final answer
x = 10,332,351.72
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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.