Finding the Fourth Proportional to 11,257,657.84, 15,537,235.44 and 7,128,072.88
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Solution
The fourth proportional to 11,257,657.84, 15,537,235.44 and 7,128,072.88 is: 9,837,796.47
Step by Step Solution
- Step 1: Write the proportion equation
11,257,657.84 : 15,537,235.44 = 7,128,072.88 : x - Step 2: Convert to fraction form
11,257,657.84/15,537,235.44 = 7,128,072.88/x - Step 3: Cross multiply
11,257,657.84x = 15,537,235.44 × 7,128,072.88 - Step 4: Simplify right side
11,257,657.84x = 110,750,546,570,038.86 - Step 5: Solve for x
x = 110,750,546,570,038.86/11,257,657.84 - Step 6: Final answer
x = 9,837,796.47
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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.