Finding the Fourth Proportional to 13,402,811.70, 20,104,217.55 and 5,317,715.70
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Solution
The fourth proportional to 13,402,811.70, 20,104,217.55 and 5,317,715.70 is: 7,976,573.55
Step by Step Solution
- Step 1: Write the proportion equation
13,402,811.70 : 20,104,217.55 = 5,317,715.70 : x - Step 2: Convert to fraction form
13,402,811.70/20,104,217.55 = 5,317,715.70/x - Step 3: Cross multiply
13,402,811.70x = 20,104,217.55 × 5,317,715.70 - Step 4: Simplify right side
13,402,811.70x = 106,908,513,301,850.55 - Step 5: Solve for x
x = 106,908,513,301,850.55/13,402,811.70 - Step 6: Final answer
x = 7,976,573.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.