Finding the Fourth Proportional to 20,261,347,439.99, 27,960,662,117.52 and 11,229,688,633.28
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Solution
The fourth proportional to 20,261,347,439.99, 27,960,662,117.52 and 11,229,688,633.28 is: 15,496,971,782.85
Step by Step Solution
- Step 1: Write the proportion equation
20,261,347,439.99 : 27,960,662,117.52 = 11,229,688,633.28 : x - Step 2: Convert to fraction form
20,261,347,439.99/27,960,662,117.52 = 11,229,688,633.28/x - Step 3: Cross multiply
20,261,347,439.99x = 27,960,662,117.52 × 11,229,688,633.28 - Step 4: Simplify right side
20,261,347,439.99x = 313,989,529,559,957,241,856 - Step 5: Solve for x
x = 313,989,529,559,957,241,856/20,261,347,439.99 - Step 6: Final answer
x = 15,496,971,782.85
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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.