Finding the Fourth Proportional to 19,154,574.87, 28,706,911.07 and 7,781,727.75
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Solution
The fourth proportional to 19,154,574.87, 28,706,911.07 and 7,781,727.75 is: 11,662,454.95
Step by Step Solution
- Step 1: Write the proportion equation
19,154,574.87 : 28,706,911.07 = 7,781,727.75 : x - Step 2: Convert to fraction form
19,154,574.87/28,706,911.07 = 7,781,727.75/x - Step 3: Cross multiply
19,154,574.87x = 28,706,911.07 × 7,781,727.75 - Step 4: Simplify right side
19,154,574.87x = 223,389,366,451,292.56 - Step 5: Solve for x
x = 223,389,366,451,292.56/19,154,574.87 - Step 6: Final answer
x = 11,662,454.95
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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.