Finding the Fourth Proportional to 20,746,982.66, 28,630,875.68 and 11,454,570.70
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Solution
The fourth proportional to 20,746,982.66, 28,630,875.68 and 11,454,570.70 is: 15,807,329.45
Step by Step Solution
- Step 1: Write the proportion equation
20,746,982.66 : 28,630,875.68 = 11,454,570.70 : x - Step 2: Convert to fraction form
20,746,982.66/28,630,875.68 = 11,454,570.70/x - Step 3: Cross multiply
20,746,982.66x = 28,630,875.68 × 11,454,570.70 - Step 4: Simplify right side
20,746,982.66x = 327,954,389,819,055.81 - Step 5: Solve for x
x = 327,954,389,819,055.81/20,746,982.66 - Step 6: Final answer
x = 15,807,329.45
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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.