Finding the Fourth Proportional to 15,482,775.93, 21,366,778.77 and 8,513,985.21
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Solution
The fourth proportional to 15,482,775.93, 21,366,778.77 and 8,513,985.21 is: 11,749,600.93
Step by Step Solution
- Step 1: Write the proportion equation
15,482,775.93 : 21,366,778.77 = 8,513,985.21 : x - Step 2: Convert to fraction form
15,482,775.93/21,366,778.77 = 8,513,985.21/x - Step 3: Cross multiply
15,482,775.93x = 21,366,778.77 × 8,513,985.21 - Step 4: Simplify right side
15,482,775.93x = 181,916,438,433,122 - Step 5: Solve for x
x = 181,916,438,433,122/15,482,775.93 - Step 6: Final answer
x = 11,749,600.93
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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.