Finding the Fourth Proportional to 15,395,038.71, 21,245,209.70 and 8,330,631.99
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Solution
The fourth proportional to 15,395,038.71, 21,245,209.70 and 8,330,631.99 is: 11,496,302.60
Step by Step Solution
- Step 1: Write the proportion equation
15,395,038.71 : 21,245,209.70 = 8,330,631.99 : x - Step 2: Convert to fraction form
15,395,038.71/21,245,209.70 = 8,330,631.99/x - Step 3: Cross multiply
15,395,038.71x = 21,245,209.70 × 8,330,631.99 - Step 4: Simplify right side
15,395,038.71x = 176,986,023,439,755.62 - Step 5: Solve for x
x = 176,986,023,439,755.62/15,395,038.71 - Step 6: Final answer
x = 11,496,302.60
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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.