Finding the Fourth Proportional to 28,479,746.72, 39,302,239.19 and 15,427,005.63
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Solution
The fourth proportional to 28,479,746.72, 39,302,239.19 and 15,427,005.63 is: 21,289,369.99
Step by Step Solution
- Step 1: Write the proportion equation
28,479,746.72 : 39,302,239.19 = 15,427,005.63 : x - Step 2: Convert to fraction form
28,479,746.72/39,302,239.19 = 15,427,005.63/x - Step 3: Cross multiply
28,479,746.72x = 39,302,239.19 × 15,427,005.63 - Step 4: Simplify right side
28,479,746.72x = 606,315,865,178,601.62 - Step 5: Solve for x
x = 606,315,865,178,601.62/28,479,746.72 - Step 6: Final answer
x = 21,289,369.99
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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.