Finding the Fourth Proportional to 15,004,449.92, 20,706,240.30 and 8,128,931.98
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Solution
The fourth proportional to 15,004,449.92, 20,706,240.30 and 8,128,931.98 is: 11,217,979.99
Step by Step Solution
- Step 1: Write the proportion equation
15,004,449.92 : 20,706,240.30 = 8,128,931.98 : x - Step 2: Convert to fraction form
15,004,449.92/20,706,240.30 = 8,128,931.98/x - Step 3: Cross multiply
15,004,449.92x = 20,706,240.30 × 8,128,931.98 - Step 4: Simplify right side
15,004,449.92x = 168,319,618,960,234.81 - Step 5: Solve for x
x = 168,319,618,960,234.81/15,004,449.92 - Step 6: Final answer
x = 11,217,979.99
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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.