Finding the Fourth Proportional to 13,017,479.76, 17,964,121.68 and 7,216,246.80
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Solution
The fourth proportional to 13,017,479.76, 17,964,121.68 and 7,216,246.80 is: 9,958,420.37
Step by Step Solution
- Step 1: Write the proportion equation
13,017,479.76 : 17,964,121.68 = 7,216,246.80 : x - Step 2: Convert to fraction form
13,017,479.76/17,964,121.68 = 7,216,246.80/x - Step 3: Cross multiply
13,017,479.76x = 17,964,121.68 × 7,216,246.80 - Step 4: Simplify right side
13,017,479.76x = 129,633,535,588,110.62 - Step 5: Solve for x
x = 129,633,535,588,110.62/13,017,479.76 - Step 6: Final answer
x = 9,958,420.37
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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.