Finding the Fourth Proportional to 28,684,458.40, 39,583,400.80 and 15,631,439.11
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Solution
The fourth proportional to 28,684,458.40, 39,583,400.80 and 15,631,439.11 is: 21,570,758.31
Step by Step Solution
- Step 1: Write the proportion equation
28,684,458.40 : 39,583,400.80 = 15,631,439.11 : x - Step 2: Convert to fraction form
28,684,458.40/39,583,400.80 = 15,631,439.11/x - Step 3: Cross multiply
28,684,458.40x = 39,583,400.80 × 15,631,439.11 - Step 4: Simplify right side
28,684,458.40x = 618,745,519,371,925.25 - Step 5: Solve for x
x = 618,745,519,371,925.25/28,684,458.40 - Step 6: Final answer
x = 21,570,758.31
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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.