Finding the Fourth Proportional to 15,781,135.92, 21,777,752.52 and 8,811,921.12
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Solution
The fourth proportional to 15,781,135.92, 21,777,752.52 and 8,811,921.12 is: 12,160,331.07
Step by Step Solution
- Step 1: Write the proportion equation
15,781,135.92 : 21,777,752.52 = 8,811,921.12 : x - Step 2: Convert to fraction form
15,781,135.92/21,777,752.52 = 8,811,921.12/x - Step 3: Cross multiply
15,781,135.92x = 21,777,752.52 × 8,811,921.12 - Step 4: Simplify right side
15,781,135.92x = 191,903,837,377,121.19 - Step 5: Solve for x
x = 191,903,837,377,121.19/15,781,135.92 - Step 6: Final answer
x = 12,160,331.07
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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.