Finding the Fourth Proportional to 27,658,317.92, 38,167,478.28 and 15,268,145.36
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Solution
The fourth proportional to 27,658,317.92, 38,167,478.28 and 15,268,145.36 is: 21,069,488.32
Step by Step Solution
- Step 1: Write the proportion equation
27,658,317.92 : 38,167,478.28 = 15,268,145.36 : x - Step 2: Convert to fraction form
27,658,317.92/38,167,478.28 = 15,268,145.36/x - Step 3: Cross multiply
27,658,317.92x = 38,167,478.28 × 15,268,145.36 - Step 4: Simplify right side
27,658,317.92x = 582,746,606,403,682.75 - Step 5: Solve for x
x = 582,746,606,403,682.75/27,658,317.92 - Step 6: Final answer
x = 21,069,488.32
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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.