Finding the Fourth Proportional to 19,658,855.16, 27,129,345.84 and 10,957,580.28
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Solution
The fourth proportional to 19,658,855.16, 27,129,345.84 and 10,957,580.28 is: 15,121,530.86
Step by Step Solution
- Step 1: Write the proportion equation
19,658,855.16 : 27,129,345.84 = 10,957,580.28 : x - Step 2: Convert to fraction form
19,658,855.16/27,129,345.84 = 10,957,580.28/x - Step 3: Cross multiply
19,658,855.16x = 27,129,345.84 × 10,957,580.28 - Step 4: Simplify right side
19,658,855.16x = 297,271,984,985,684 - Step 5: Solve for x
x = 297,271,984,985,684/19,658,855.16 - Step 6: Final answer
x = 15,121,530.86
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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.