Finding the Fourth Proportional to 28,409,631.38, 39,205,272.67 and 15,356,890.02
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Solution
The fourth proportional to 28,409,631.38, 39,205,272.67 and 15,356,890.02 is: 21,192,498.15
Step by Step Solution
- Step 1: Write the proportion equation
28,409,631.38 : 39,205,272.67 = 15,356,890.02 : x - Step 2: Convert to fraction form
28,409,631.38/39,205,272.67 = 15,356,890.02/x - Step 3: Cross multiply
28,409,631.38x = 39,205,272.67 × 15,356,890.02 - Step 4: Simplify right side
28,409,631.38x = 602,071,060,597,301.75 - Step 5: Solve for x
x = 602,071,060,597,301.75/28,409,631.38 - Step 6: Final answer
x = 21,192,498.15
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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.