Finding the Fourth Proportional to 15,313,944.68, 21,133,688.28 and 8,438,870.24
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Solution
The fourth proportional to 15,313,944.68, 21,133,688.28 and 8,438,870.24 is: 11,645,885.94
Step by Step Solution
- Step 1: Write the proportion equation
15,313,944.68 : 21,133,688.28 = 8,438,870.24 : x - Step 2: Convert to fraction form
15,313,944.68/21,133,688.28 = 8,438,870.24/x - Step 3: Cross multiply
15,313,944.68x = 21,133,688.28 × 8,438,870.24 - Step 4: Simplify right side
15,313,944.68x = 178,344,453,087,528.81 - Step 5: Solve for x
x = 178,344,453,087,528.81/15,313,944.68 - Step 6: Final answer
x = 11,645,885.94
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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.