Finding the Fourth Proportional to 20,217,986.58, 30,326,977.94 and 4,865,278.11
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Solution
The fourth proportional to 20,217,986.58, 30,326,977.94 and 4,865,278.11 is: 7,297,916.70
Step by Step Solution
- Step 1: Write the proportion equation
20,217,986.58 : 30,326,977.94 = 4,865,278.11 : x - Step 2: Convert to fraction form
20,217,986.58/30,326,977.94 = 4,865,278.11/x - Step 3: Cross multiply
20,217,986.58x = 30,326,977.94 × 4,865,278.11 - Step 4: Simplify right side
20,217,986.58x = 147,549,181,913,934.91 - Step 5: Solve for x
x = 147,549,181,913,934.91/20,217,986.58 - Step 6: Final answer
x = 7,297,916.70
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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.