Finding the Fourth Proportional to 28,884,437.91, 39,860,442.12 and 15,831,656.46
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Solution
The fourth proportional to 28,884,437.91, 39,860,442.12 and 15,831,656.46 is: 21,847,640.86
Step by Step Solution
- Step 1: Write the proportion equation
28,884,437.91 : 39,860,442.12 = 15,831,656.46 : x - Step 2: Convert to fraction form
28,884,437.91/39,860,442.12 = 15,831,656.46/x - Step 3: Cross multiply
28,884,437.91x = 39,860,442.12 × 15,831,656.46 - Step 4: Simplify right side
28,884,437.91x = 631,056,825,987,554.12 - Step 5: Solve for x
x = 631,056,825,987,554.12/28,884,437.91 - Step 6: Final answer
x = 21,847,640.86
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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.