Finding the Fourth Proportional to 13,458,306.80, 18,569,977.44 and 7,656,749.84
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Solution
The fourth proportional to 13,458,306.80, 18,569,977.44 and 7,656,749.84 is: 10,564,900.47
Step by Step Solution
- Step 1: Write the proportion equation
13,458,306.80 : 18,569,977.44 = 7,656,749.84 : x - Step 2: Convert to fraction form
13,458,306.80/18,569,977.44 = 7,656,749.84/x - Step 3: Cross multiply
13,458,306.80x = 18,569,977.44 × 7,656,749.84 - Step 4: Simplify right side
13,458,306.80x = 142,185,671,792,523.62 - Step 5: Solve for x
x = 142,185,671,792,523.62/13,458,306.80 - Step 6: Final answer
x = 10,564,900.47
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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.