Finding the Fourth Proportional to 13,117,805.52, 18,102,603.24 and 7,316,962.98
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Solution
The fourth proportional to 13,117,805.52, 18,102,603.24 and 7,316,962.98 is: 10,097,426.55
Step by Step Solution
- Step 1: Write the proportion equation
13,117,805.52 : 18,102,603.24 = 7,316,962.98 : x - Step 2: Convert to fraction form
13,117,805.52/18,102,603.24 = 7,316,962.98/x - Step 3: Cross multiply
13,117,805.52x = 18,102,603.24 × 7,316,962.98 - Step 4: Simplify right side
13,117,805.52x = 132,456,077,748,708.05 - Step 5: Solve for x
x = 132,456,077,748,708.05/13,117,805.52 - Step 6: Final answer
x = 10,097,426.55
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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.