Finding the Fourth Proportional to 21,291,495.40, 29,351,671.41 and 15,169,295.08
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Solution
The fourth proportional to 21,291,495.40, 29,351,671.41 and 15,169,295.08 is: 20,911,831.52
Step by Step Solution
- Step 1: Write the proportion equation
21,291,495.40 : 29,351,671.41 = 15,169,295.08 : x - Step 2: Convert to fraction form
21,291,495.40/29,351,671.41 = 15,169,295.08/x - Step 3: Cross multiply
21,291,495.40x = 29,351,671.41 × 15,169,295.08 - Step 4: Simplify right side
21,291,495.40x = 445,244,164,709,489.69 - Step 5: Solve for x
x = 445,244,164,709,489.69/21,291,495.40 - Step 6: Final answer
x = 20,911,831.52
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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.