Finding the Fourth Proportional to 27,985,557.36, 38,619,544.32 and 15,595,377.84
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Solution
The fourth proportional to 27,985,557.36, 38,619,544.32 and 15,595,377.84 is: 21,521,328.95
Step by Step Solution
- Step 1: Write the proportion equation
27,985,557.36 : 38,619,544.32 = 15,595,377.84 : x - Step 2: Convert to fraction form
27,985,557.36/38,619,544.32 = 15,595,377.84/x - Step 3: Cross multiply
27,985,557.36x = 38,619,544.32 × 15,595,377.84 - Step 4: Simplify right side
27,985,557.36x = 602,286,385,679,025.88 - Step 5: Solve for x
x = 602,286,385,679,025.88/27,985,557.36 - Step 6: Final answer
x = 21,521,328.95
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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.