Finding the Fourth Proportional to 27,611,413.55, 38,103,865.79 and 15,221,234.78
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Solution
The fourth proportional to 27,611,413.55, 38,103,865.79 and 15,221,234.78 is: 21,005,367.45
Step by Step Solution
- Step 1: Write the proportion equation
27,611,413.55 : 38,103,865.79 = 15,221,234.78 : x - Step 2: Convert to fraction form
27,611,413.55/38,103,865.79 = 15,221,234.78/x - Step 3: Cross multiply
27,611,413.55x = 38,103,865.79 × 15,221,234.78 - Step 4: Simplify right side
27,611,413.55x = 579,987,887,391,417.88 - Step 5: Solve for x
x = 579,987,887,391,417.88/27,611,413.55 - Step 6: Final answer
x = 21,005,367.45
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1.5x scale
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.