Finding the Fourth Proportional to 28,146,617.91, 38,842,035.84 and 15,756,813.09
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Solution
The fourth proportional to 28,146,617.91, 38,842,035.84 and 15,756,813.09 is: 21,744,235.87
Step by Step Solution
- Step 1: Write the proportion equation
28,146,617.91 : 38,842,035.84 = 15,756,813.09 : x - Step 2: Convert to fraction form
28,146,617.91/38,842,035.84 = 15,756,813.09/x - Step 3: Cross multiply
28,146,617.91x = 38,842,035.84 × 15,756,813.09 - Step 4: Simplify right side
28,146,617.91x = 612,026,698,765,961.25 - Step 5: Solve for x
x = 612,026,698,765,961.25/28,146,617.91 - Step 6: Final answer
x = 21,744,235.87
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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.