Finding the Fourth Proportional to 21,328,733.72, 29,432,924.70 and 12,164,328.92
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Solution
The fourth proportional to 21,328,733.72, 29,432,924.70 and 12,164,328.92 is: 16,786,358.81
Step by Step Solution
- Step 1: Write the proportion equation
21,328,733.72 : 29,432,924.70 = 12,164,328.92 : x - Step 2: Convert to fraction form
21,328,733.72/29,432,924.70 = 12,164,328.92/x - Step 3: Cross multiply
21,328,733.72x = 29,432,924.70 × 12,164,328.92 - Step 4: Simplify right side
21,328,733.72x = 358,031,777,128,392.31 - Step 5: Solve for x
x = 358,031,777,128,392.31/21,328,733.72 - Step 6: Final answer
x = 16,786,358.81
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1.5x scale
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.