Finding the Fourth Proportional to 28,686,690.67, 39,586,477.74 and 15,633,668.65
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Solution
The fourth proportional to 28,686,690.67, 39,586,477.74 and 15,633,668.65 is: 21,573,833.07
Step by Step Solution
- Step 1: Write the proportion equation
28,686,690.67 : 39,586,477.74 = 15,633,668.65 : x - Step 2: Convert to fraction form
28,686,690.67/39,586,477.74 = 15,633,668.65/x - Step 3: Cross multiply
28,686,690.67x = 39,586,477.74 × 15,633,668.65 - Step 4: Simplify right side
28,686,690.67x = 618,881,875,929,592.50 - Step 5: Solve for x
x = 618,881,875,929,592.50/28,686,690.67 - Step 6: Final answer
x = 21,573,833.07
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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.