Finding the Fourth Proportional to 16,217,831.21, 22,378,398.12 and 9,690,080.90
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Solution
The fourth proportional to 16,217,831.21, 22,378,398.12 and 9,690,080.90 is: 13,370,991.80
Step by Step Solution
- Step 1: Write the proportion equation
16,217,831.21 : 22,378,398.12 = 9,690,080.90 : x - Step 2: Convert to fraction form
16,217,831.21/22,378,398.12 = 9,690,080.90/x - Step 3: Cross multiply
16,217,831.21x = 22,378,398.12 × 9,690,080.90 - Step 4: Simplify right side
16,217,831.21x = 216,848,488,083,315.91 - Step 5: Solve for x
x = 216,848,488,083,315.91/16,217,831.21 - Step 6: Final answer
x = 13,370,991.80
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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.